The highest G-force on a roller coaster ever was 6.3 Gs. Hi there! all of this energy is depleted; in other words, this represents the A full train Something in the range of 30-50 cm (12-20 in) should work well. Intamin (older) cars were quite heavy around 2800 each and (newer) around 2500 each. [1] Lap bar restraints consist of a padded bar mounted to the floor or side of the train that swings backwards into the rider's lap. It looks like my website got a case of the hiccups. What's New (I did high school physics decades ago - can't remember much of it now.). Each car on The Beast weighs 2,300 pounds with the weight of a full train (without riders) 13,800 pounds. The Slingshot ride G-force is between 3 to 5 Gs and can cause you to pass out several times during the ride. grants permission to copy, distribute and display this work in unaltered Suppose the ride starts where the car is drawn at a height $h_1$ above a common reference line (like the horizon). Each of set of the roller coaster have different prices. Rising Fast," Los Angeles Times, 6 Mar 2017. Both wood and steal. The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network. To learn more, see our tips on writing great answers. To read more about coaster design check out Coasters 101: An Engineers Guide to Roller Coaster Design. [5] History [ edit] In September 2016, crates from Mack Rides began to appear on groundwork that was ongoing in the park. Potential energy is a function of the height (PE=mgh). It could have been wrong. [2] D. Moran, An 850 kg roller-coaster is released from rest at Point A of the track . Did Billy Graham speak to Marilyn Monroe about Jesus? (a) If the vehicle. One detail to note, we did not include the mass of the lift hill chain in our calculation. Ryan DSouza from Internet marketing strategy. the work is the author's own and that Stanford University provided no About Us The weight of roller coaster carts varies greatly with the roller coaster style. I remember hearing in a video that the empty trains nemesis (alton towers) weighed around 10 000kg. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); See how Portent can help you own your piece of the web. Next, use this equation to compute the time: Vf=Vo+at. Which was the first Sci-Fi story to predict obnoxious "robo calls"? The wheels on MF are larger than most coasters, and consistent with the rest of the design, they're very heavy duty wheels. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Images related to the topicA roller coaster has a mass of 1200 kg when fully loaded. The Highest Drop on the Roller Coaster and Potential Energy at the top. Arrow cars (2 seaters) weighed around 1600 lbs each and Arrow (3 seaters) around 1700 lbs. Those that do not have the strength to stop the weight of the rollator also should not use it. The cars have become heavier over the past 20 years with the cars originally weighing in at 1,500 pounds. How much does an average roller coaster cart weigh? Thereafter all would be the same. My dad, a PHD engineer. Lap bars were first used in 1907 with the Coney Island coaster Drop the Dip. The wheels are sometimes located between the cars, as well as at the front and rear of the entire train. A rolling average can help you find trends that would otherwise be hard to detect. Nemesis at RCDB. in some calculations.). "Six Free shipping for many products! Just one month ago I also didnt know about the functionality of the rolling averages. [citation needed]. 1 pryonisys Members 448 Location: Erie, PA Gender: Male just a thought, > Hi, does anyone have any idea how much the average roller By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. A roller coaster train is a vehicle made up of two or more cars connected by specialized joints which transports passengers around a roller coasters circuit. The cars have become heavier over the past 20 years with the cars originally weighing in at 1,500 pounds. This is quite simply one of the most immediately useful marketing articles Ive ever read. When undergoing an acceleration of 9 gs, your body feels nine times heavier than usual, blood rushes to the feet, and the heart cant pump hard enough to bring this heavier blood to the brain. How it works: the ride takes two minutes to climb to a 1,670 meter peak before the big drop: 1600 feet at 220 miles per hour. A subreddit for discussions, photos, news, and updates for the world of roller coasters and amusement parks! Use a rolling average, though, and you start to see a pattern emerge, with peaks happening more . Take care. It is recommended that earrings should be removed before riding roller coasters with over-the-shoulder restraints. Sign up for a new account in our community. Not sure if there really is a "typical" weight. Seems a bit on the light side for a 36-passenger train but I believe them lol. Having owned several strollers myself, I know the real issue for the mom wrestling with the big stroller is a bit more complicated. The chain return is now usually located inside the spine of the track rather than a separate component. It is slightly more complicated when data are monthly of quarterly; there isnt a mid-slot at month 6.5 or quarter 2.5. Does [3] J. Jiang, Is this true? Those are supposed to be pretty heavy. Looking for something specific? In order to so, we need to estimate the maximum mass of a fully loaded train to ensure our lift hill motor can pull even the heaviest train of gravy loving coaster enthusiasts up the massive hill. I really enjoy learning new ride stats and would love to know how much: -a B&M Hyper train weighs (and what the difference is between the traditional 4 across trains and the trains with staggered seating like on Shambhala) -Taron's trains weight. The average across all Mondays, all Tuesdays etc. Site Map Coasters 101: An Engineer's Guide to Roller Coaster Design by Nick Weisenberger, CreateSpace, 2012. Roller coasters almost always begin with an initial vertical drop. Keep up the good work and since no one has mentioned, I guess if you presented the full table that generated the graph that could be nice for the math-competent folks, but other than that great post. Six Flags and Cedar Fair (which owns Cedar Point and 10 others) are the two largest independent amusement-park operators in the U.S. Each generates almost $1 billion a year in revenue. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. The larger the mass, the larger the momentum, and the more force you need to change it. It's going to vary from coaster to coaster, and car to car. The author warrants that And trust me, I stop at simple. (Here each day is a season). This energy is associated with the state of separation between two objects that attract each other by the gravitational force. The number seemed very high to me at the time. This helps you continue to calculate your rolling period averages. Is there a specific type of roller coaster that you are wondering? Do you have pictures of Gracie Thompson from the movie Gracie's choice? Your email address will not be published. > just a thought How much do the roller coaster weigh? Sorry, i can be a math moron myself. Lets begin by calculating the force needed to pull the train up the lift hill incline and thus the power needed for the motor. Tell your GM I will sign off on 1000 exp as a thank you for upping my game. The work done on the mass is then W = Fd = mgh. I couldn't say exactly as I wasn't at the ride at the time, but my wife (about 55 kg) had to go in the car with the smaller child (about 25 kg) and the larger child (about 35 kg) had to go in a car with another child about her size. We say that the car at that point has a Potential Energy $U$ according to: $U=mgh_1$, where $g=9.81\:\mathrm{ms^{-2}}$ the Earth's acceleration constant, $m$ is the mass of the car (and riders) and $h_1$ that height above the reference line. Quite simply the most useful blog post I have read in a very long time. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. energy U at the top of the hill by using the formula. Rolling averages help us track and analyze progression levels for just about any given metric. These units can support maximum weights of approximately 250 pounds (114kg). Since this is my first attempt, I will make it rather simple. The cars have become heavier over the past 20 years with the cars originally weighing in at 1,500 pounds.Roller coaster riders pull various levels of Gs but they rarely get much beyond 4 Gs, according to Sanjay Gupta. The motions of the ride can cause blood vessels to rupture in the brain, which produces headaches that cannot be relieved and must be surgically treated. What were the poems other than those by Donne in the Melford Hall manuscript? We will plan on having a six car train. First, they learn that all true roller coasters are completely driven by the force of gravity and that the conversion between potential and kinetic energy is essential to all roller coasters. ), Now we give the car a nudge and it starts accelerating down the slope and starts acquiring Kinetic Energy $K$: $K=\frac{mv^2}{2}$, where $m$ is the mass of the car (and riders) and $v$ is the velocity of the car. "Ticket It looks like my website got a case of the hiccups. As you can see, the mass of car (and riders) $m$ does play part here but again it seems folly to rely on loading specifications rather than safe design. Using the data from above, you get a graph that looks like this: That's not terribly helpful as a trend detector. Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? We selected the angle of the lift to be at 42 degrees. There are two major types of restraints: lap bar and over-the-shoulder. Required fields are marked *. (More digits than shown were used Im an engineer (and MBA) who taught business maths in both British And US colleges and universities. Those will also be different than the wide variety of different steel coaster trains, as will the Gerstlauer wood coaster trains and cars. are you looking for how much an individual4 person car weighs or a whole 24 person train? A fascinating insight into the nuts, bolts, and nitty-gritty of coaster engineering. Lap bar restraints, like buzz bars give the rider much greater freedom of movement than over-the-shoulder restraints, enhancing the feeling of danger for some. Here are the search results of the thread What is the average mass of a roller coaster cart in KG? The cars have, Estimated Average Mass of a male rider: 76Kg. The ride is an unbelievable 420 feet tall, and was the tallest roller coaster and fastest roller coaster on earth when it opened in 2003. Area Manager Digital Marketing - Kings Island, How much does a Beast train weigh? The side wheels can be mounted on the outside or inside of the train, depending on the manufacturer (although outside-mounted wheels are more common). Now we know how big of a motor we will need. It is what presses your body to the outside of the loop as the train spins around. Privacy Policy. Usually roller coasters with little to no air-time (being lifted out of your seat) do not have restraints. Price are depending on the length of the track and size of the roller coaster cars. If one fails, the restraint will remain locked. Reddit and its partners use cookies and similar technologies to provide you with a better experience. mechanisms by assuming it is much smaller than the energy required for What average force is required to bring the roller-coaster to a stop at Point D if the brakes are . each. It depends which roller coater because each roller coaster has a different weight. A roller coaster train is a vehicle made up of two or more cars connected by specialized joints which transports passengers around a roller coaster's circuit. A roller coaster train is a vehicle made up of two or more cars connected by specialized joints which transports passengers around a roller coaster's circuit. On average, these carts can weight between 600 and about 1000 pounds each. I plan on linking the two together later on. If you then plotted a curve through the smoothed data, it would help to identify upward/downward trends, especially if the trends were small relative to the daily fluctuations. My first reaction when I read a definition like that was, Buh?. Python script that identifies the country code of a given IP address, Word order in a sentence with two clauses. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. That's almost like asking which woman weighs more, and leaving the question at that. We will plan on having a six car train. If you found this article useful, please share it. Solve for v2 and we get 27.42 m/s or 61.34mph! Since we are interested in the potential energy per passenger, we will set m to the mass of a typical person, 70 kg, plus the weight of the roller coaster train divided by the number of passengers. It was , For example: An acceleration of 1 g equates to a rate of change in velocity of approximately. If we assume no friction losses, then energy is conserved. total energy cost per person per ride. Wow its not as easy as Roller Coaster Tycoon makes it out to be! [2] Goliath Each car holds two riders at 100 kg each, for a maximum mass of 735 kg (535 kg car + 2 x 100 kg riders). Why does Acts not mention the deaths of Peter and Paul? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. ok so how much does a normal car weigh in comparison to a rollercoaster carriage? An Arrow looping train? coaster? How much does an Intamin roller coaster car weigh? How would one calculate the lateral seat force experienced by a roller coaster rider if the turn were banked less than ideal? Seriously, I would not trust rides like that. These losses are fairly difficult to model mathematically, at least accurately. construction, land cost, or other factors truly drive the cost of a day The larger the mass, the larger the momentum, and the more force you need to change it. How much does a roller coaster cart cost? The tallest lift hill in the world is Carowinds' Fury 325 at 325 feet tall (99.06 meters). Your email address will not be published. [1] H. Martin, By the time I was 13 theyd both given up on any dreams of me being a math genius and instead hoped Id finally count to 20 without removing my shoes. Each car holds two riders at 100 kg each, for a maximum mass of 735 kg (535 kg car + 2 x 100 kg riders). Related searches to What is the average mass of a roller coaster cart in KG? > just a thought Edit: We've found the weight of a B&M Hyper train (see one of my comments down below). There are two other assumptions we will make at this point: the velocity of the train as it exits the station and the velocity at the top of the lift hill. It's going to vary from coaster to coaster, and car to car. The problem with trying to answer is that your questions are far to general. What exactly is Acentripetal? You have just come across an article on the topic What is the average mass of a roller coaster cart in KG?. 100% efficiency, it thus costs, or 0.4 cents per person per ride. Let's take the roller coaster Goliath of Six But that was with out all the extra crap they introduced in the 90s (individual lap bar lockers/bars/steel-core headrests, etc.). The mean height is 54.77 inches, the standard deviation of heights is 6.58 inches, and there were 65 The worlds tallest roller coaster is Kingda Ka, at Six Flags Great Adventure in Jackson, New Jersey, USA. divided by the number of passengers. Leviathan at Canadas Wonderland Park $28 Million. All other rights, including commercial rights, are reserved to the It was The Promenades-Ariennes or The Aerial Walk in Paris. Hopefully this answered your question. I suspect that most of us in marketing are math morons; I personally am a failed engineer! The existence of a maximum weight was mentioned in passing but I don't think a figure was stated (I'm guessing there's a figure written somewhere for riders and if you're over 200 kg or whatever you're out of luck.). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. form, with attribution to the author, for noncommercial purposes only. 700kg x 4 = 2800 Kg per train. Price are depending on the length of the track and size of the roller coaster cars. We answer all your questions at the website Ecurrencythailand.com in category: +15 Marketing Blog Post Ideas And Topics For You. Are we talking about filled with fat ACErs or without? Total Mass of The One Train. What is the average mass of a roller coaster cart in KG? The combination of gravity and inertia, along with g-forces and centripetal acceleration give the body certain sensations as the coaster moves up, down, and around the track. I never comment in blogs so bear with me if I say anything out of the ordinary or have a crappy structure. This means that as the car accelerates down the slope, $U$ is being converted to $K$. We selected the angle of the lift to be at 42 degrees. Expedition Everest Roller coaster trains also have restraints that keep the passengers in their seats. each. We can get a rough idea of the energy cost by doing Top 6 Best Answers, Can A Puppy Stay With Its Mother Forever? Terms of Use https://themeparkreview.com/forum/topic/116-terms-of-service-please-read/, How much do roller coaster cars usually weigh? A rolling average can help you find trends that would otherwise be hard to detect. > coaster carriage weighs? "The Rollercoaster" now operates with lap bars, although the original train is still stored on the transfer track in the station. Most units include brakes that slow the device but do not stop it completely. Prices for Universal Studios, Disneyland and Other Theme Parks Are There are a few basic parameters I decide to start out with: height of the station track from the ground is ten feet or 3.048 meters, height of the first hill is 120 feet or 36.576 meters, and the angle of the lift is at 42 degrees. A 35.0-kg dolphin decelerates from 12.0 to 7.50 m/s in 2.30 s to join another dolphin in play. Roller coaster trains have wheels that run on the sides (side friction or guide wheels) and underneath the track (upstop, underfriction, or underlocking wheels) as well as on top of it (road or running wheels); these lock the train to the tracks and prevent it from jumping the track. B&M sit down, or stand up, or inverted? Thats a simple rolling average. Do you mean a Corolla or an SUV? Or more specifically, what is the energy cost per ride? Today, we are going to talk about the physics of roller coasters and run a few calculations in order to compute: Please keep in mind that everything is generally simplified. Depends. READERS MAILBAG:HOW MUCH DOES A BEAST TRAIN WEIGH? https://www.visitkingsisland.com/blog/2019/june/readers-mailbag-how-much-does-a-beast-train-weigh. Is the total mechanical energy conserved in a system that's a simplifying approximation of an actual roller coaster? The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes. Tags: calculationscoasters101g forceslift hillmathematicsroller coaster physicsspeedvelocity. No wonder it holds it's speed so well. How fast is the roller-coaster moving at Point B? From there, a series of seven spiral inversions inflict 10 g on riders. I am trying to solve a Physics problem but need to know a mass first. [Other]. On average, these carts can weight between. How much does an average roller coaster cart weigh? Most uses of moving/rolling averages are applied to time series data, say a series of daily sales. Each car on The Beast weighs 2,300 pounds with the weight of a full train (without riders) 13,800 pounds. per car, then we're talking almost a half-ton in wheels per car. Individual cars vary in design and can carry from one to eight or more passengers each. Is there a roller coaster that kills you? Is kanodia comes under schedule caste if no then which caste it is? OK, try this example. One disadvantage of over-the-shoulder restraints is that they can provide discomfort to the rider (known among coaster enthusiasts as headbanging), especially on rougher roller coasters. A roller-coaster vehicle has a mass of 500 kg when fully loaded with passengers. Originally the PTC cars (3 seater) weighed about 1500 to 1600 lbs. Title says it all. to get seasonal indexes for each day. By: Jonathan Torgrimson. Save my name, email, and website in this browser for the next time I comment. Expedition Everest is the most expensive roller coaster ever built. Six Flags America Shuts Down 2 Areas Indefinitely, Kentucky Kingdom Retires T3 Roller Coaster, Recapping OSUs SITE 2023 Student-led Conference, Review: Serengeti Flyer at Busch Gardens Tampa. passengers up to a height of 180 feet (55 m). In a roller coaster, does the rear car have a higher acceleration/speed? The 11 Top Answers, Are There Alligators In Merritt Island Florida? weight per person, we will use twice the mass of the person (140 kg). Thanks for taking the time to share it! Scan this QR code to download the app now. Thanks for contributing an answer to Physics Stack Exchange! The staff loading individual (separate) cars on the ride said each had a minimum and maximum requirement to clear a hill - too little, it wouldn't accelerate enough down one hill to clear the next up, too much it wouldn't go up that hill either. Really helpful! Arrow cars (2 seaters) weighed around 1600 lbs each and Arrow (3 seaters) around 1700 lbs. Those will also be different than the wide variety of different steel coaster trains, as will the Gerstlauer wood coaster trains and cars. Therefore, the fully loaded coaster train will have a total mass of 4500 kg (about 10,000 pounds). Originally the PTC cars (3 seater) weighed about 1500 to 1600 lbs. Standard: Standard rollators are generally lightweight, at an average of 15 pounds (6.8kg). Use MathJax to format equations. If you disable this cookie, we will not be able to save your preferences. The relaunched ride takes 14 passengers. Prices for Universal Studios, Disneyland and Other Theme Parks Are Archived post. > wat about for steel coasters? On over-the-shoulder restraints, this seatbelt is mostly cosmetic as the restraint locks on its own. Mass does not make a roller coaster go faster but it does make it harder to slow down. By A single train weighs up to 500 pounds. Many cars are roughly a ton. enjoy another stunning sunset 'over' a glass of assyrtiko. The velocity coming out of the station will be 10mph or 4.4704 m/s. [6] Im just taking the average of the last 7 rows, all the way down the column. Is there a specific type of coaster that you're wondering about? Since the 1st drop is the longest, the velocity at the bottom will be the greatest. It is useful for forecasting. Tate Publishing, 2009. My kids went on a roller coaster type ride on the weekend. Typical vertical drops might range in height from 50 80 meters. You need to be a member in order to leave a comment. This means that as the car accelerates down the slope, U is being converted to K. At the start of the ride, when v = 0, the Total Energy T was: T = m g h 1 and when the car reaches the lowest point h 3, then: T = m g h 3 + m v 2 2. In addition to being able to negotiate ups and downs safely, the car must also be able to safely negotiate bends. How much do the roller coaster carts weigh? It starts with the design the research, creative, and mechanics make up the bulk of the cost. Receive valuable, in-depth and strategic advice. Weight is the pull of gravity. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. A simple rolling average (also called a moving average, if you wanted to know) is the unweighted mean of the last n values. Somehow I missed the rolling average. Casino Zeus, What Are The Advantages of Playing Poker On Getmega, The Ultimate Guide to Downloading Poker Apps In India. Intamin (older) cars were quite heavy around 2800 each and (newer) around 2500 each. > coaster carriage weighs? As a rough estimate for the train Until early 2006, The Rollercoaster at Blackpool Pleasure Beach in the UK also operated without any restraints, although seatbelts were added to the ride in the 2007 season. They can be range from. Finally, we want to figure out how what the radius of the curve of the bottom of the first drop should be in order to keep the g forces felt by the riders to be 2.5 gs or less. (Most modern over-the-shoulder restraints come into contact with riders at the lap; however, older so-called "horsecollar" ones actually restrain riders by the shoulders). Please comment if you have any questions! Thats pretty quick for a lift hill but it is only going up one hundred feet and at a 42 degree angle. Substitute the KE, PE, and W equations into our energy balance equation and we get this resulting equation: Now we can insert our values and solve: .5(4500)(4.4704^2)+4500(9.8)(3.048)+F(50.106)=.5(4500)(8.046^2)+4500(9.8)(36.576). Very much a guidebook to rollercoasters in the United States. Flags Great America (Gurnee, Illinois), a wooden rollercoaster famous Are you looking for an answer to the topic What is the average mass of a roller coaster cart in KG?? We will ignore the energy Even when operating at 5% efficiency, 7.5 cents per A little rearranging gives: v = 2 g ( h 1 h 3). However, Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. If you want to learn more complex rolling averages, read the Wikipedia page. It gives a more realistic picture than the standard average, enabling us to take corrective action as and when needed. However, steel is used more due to its versatility and ability to provide elements such as smoother rides and going upside down. Train/Cart Type The train is the vehicle that transports the passengers through the ride. [Other], Physics Rollar Coaster Project by Jonathan Torgrimson Prezi, Energy Transformation on a Roller Coaster The Physics . This resistance to a change in motion is stronger than gravity. some simple calculations. each. A roller coaster takes advantage of this similarity. I actually went to check this now and I found 9500. There is however one complication: my ideal scenario doesn't account for any energy losses due to friction between car and track or air drag losses. Typically they operate two trains at a time, with one train loading and unloading while the other train runs the course. It opened in the Forbidden Valley area of the park on 19 March 1994. and our Hi, does anyone have any idea how much the average roller coaster carriage weighs? Chicago Tribune, 3 May 15. Here is the deal on the rides: BTMRR Yes, it is actually faster at night due to oils building up through out the day and metal shrinking slightly in the cooler temperatures resulting in less friction. about the radius of the drop, what do you mean by Gs=Acentripetal/9.8? input other than typesetting and referencing guidelines. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? friction, etc., we can redo this calculation with a different Therefore, the fully loaded coaster train will have a total mass of 4500 kg (about 10,000 pounds). Geesh! Learn more about Stack Overflow the company, and our products. @user3591496: welcome. The SI unit of mass is kilogram. I am not sure what, if any, conclusions can be drawn, since heights are not necessarily reported consistently or accurately. The 13 New Answer, Can A Dog Swallow A Chuckit Ball? If you continue to use this site we will assume that you are happy with it. How much does a Beast train weigh? the chain lift hill. We are using cookies to give you the best experience on our website. This is the principal mode of operation of roller coasters (without any propulsion systems installed in the cars) which allows them to negotiate a series of slopes and hills without running out of energy. that account for a large portion of the admission ticket price? What is Wario dropping at the end of Super Mario Land 2 and why? Great question, Byron. My moms a PHD physicist. A PTC 2 bencher is going to weigh differently than a PTC 3 or 4 bencher. They were extremely helpful for a physics project, especially the article on banking turns and calculating the ideal banked turn!!! I can't find any average range online, just need a feasible range of values to work with. P.S. This website uses cookies so that we can provide you with the best user experience possible. Velocity includes both the speed of an object (change in position over time) and the direction in which it is moving. Approx 2300 lbs without gravy or fat ACErs. A 7 period moving/rolling window of 7 data points can be used to smooth out regular daily fluctuations, such as low sales mid-week and high sales Fri and Sat. Perhaps that's loaded weight? What is the most expensive roller coaster in the world? Again, what do you call a "normal" car? Flags Great America's Goliath Earns 3 Guinness World Record Titles," Welcome to another session of Coasters101! Information related to the topic What is the average mass of a roller coaster cart in KG?
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