SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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At the top of a hill
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At the bottom of a hill
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In the middle of the hill
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At the beginning of the ride
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Detailed explanation-1: -Kinetic energy is greatest at the lowest point of a roller coaster and least at the highest point.
Detailed explanation-2: -Being at the top of a hill, the object contains only potential energy, as there’s a height difference between the top of a hill and the ground level. Since we are assuming no motion at this point, there is no kinetic energy present.
Detailed explanation-3: -The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has.
Detailed explanation-4: -While going down the hill, the roller coaster picks up more and more speed. The potential energy the cart had at the top of the hill transforms into kinetic energy at the bottom of the hill. Because you are moving so fast, you have a very high kinetic energy, and a very low potential energy.
Detailed explanation-5: -When riding a roller coaster, you go up and down many hills. When do you have the maximum (most) kinetic energy? At the top of each hill.