Many people love roller coasters. Some people call them scream machines. They agree that riding a roller coaster is a thrilling experience. What you may not realize while you are going so fast is that a roller coaster has no engine. You are not being propelled around the track by a motor. A roller coaster moves on its own.
How do you think that can happen?
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for sure i thing like when i went to a mall we went in a roller coaster first they went on wheels and then then go to the up and suddenly we will go down that means the roller coaster goes in its own
sorry for grammar mistakes
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