You are riding the front car of a roller coaster as it rides around the loop-the

Question

You are riding the front car of a roller coaster as it rides around the loop-the-loop at the bottom of the lift hill. You know that A,the velocity of the car at the bottom of the loop-the-loop is less than the velocity of the car at the top of the loop-the-loop. B.the velocity of the car at the top of the loop-the-loop is zero. C.the velocity of the car at the bottom of the loop-the-loop is exactly the same as the velocity of the car at the top of the loop-the-loop. D.the velocity of the car at the bottom of the loop-the-loop is greater than the velocity of the car at the top of the loop-the-loop.

Explanation / Answer

When roller coaster moves to top of loop then it gains potential energy. According to conservation of mechanical energy, some part of kinetic energy of roller coaster converts to potential energy at the top of loop. Thus at top of loop there will be some potential energy and some kinetic energy whose sum is equal to initial kinetic energy of loop at the bottom

Correct answer will be D

The velocity of the car at the bottom of the loop-the-loop is greater than the velocity of the car at the top of the loop-the-loop.

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