GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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On a roller coaster, where is maximum kinetic energy?
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At the bottom of a big hill
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When going around a corner
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When going upside down
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At the top of a big hill
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Explanation:
Detailed explanation-1: -Kinetic energy is greatest at the lowest point of a roller coaster and least at the highest point.
Detailed explanation-2: -Because the mass is constant, if the velocity is increased, the kinetic energy must also increase. This means that the kinetic energy for the roller coaster system is greatest at the bottom of the highest hill on the track: the bottom of the lift hill.
Detailed explanation-3: -Use KE=1/2mv^2 A kiddie roller coaster car has a mass 100 kilograms. At the top of a hill, it’s moving at a speed of 3 meters/second. After reaching the bottom of the hill, its speed doubles. The car’s kinetic energy at the bottom is (half, double, triple or quadruple) its kinetic energy at the top.
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