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.
• B. It becomes 1.5 times that of your initial potential energy.
• C. It becomes 3 times that of your initial potential energy.
• D. It becomes 9 times that of your initial potential energy.

Answer 1

The correct option is A

It does not change.

Potential energy is mathematically represented by the formula,
$\text{P.E. = m}\times g\times h,$
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.