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Question

During a race, a man weighing 60 kg is accelerating on a levelled track and acquired a velocity thrice his initial velocity. What was the change in his potential energy?


A

It does not change.

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B

It becomes 1.5 times that of your initial potential energy.

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C

It becomes 3 times that of your initial potential energy.

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D

It becomes 9 times that of your initial potential energy.

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Solution

The correct option is A

It does not change.


Potential energy is mathematically represented by the formula,
P.E. = m×g×h,
where m is the mass,
g is acceleration due to gravity and
h is the height in meters.
As you are running on a levelled track, there is no change in potential energy because there is no change in the height of the body from the ground.


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