A car is accelerated on a levelled road and attains a velocity 4 times

• GP Work Energy

A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car

1. does not change
2. becomes twice to that of initial
3. becomes 4 times that of initial
4. becomes 16 times that of initial

Answer

Potential energy of the car don’t change and kinetic energy changes.

Initial velocity = u

Kinetic Energy, K = ½mu²

Final velocity, v = 4u

New Kinetic Energy, K' = ½m(4u)²

K' = 16K

So in this process, the kinetic energy of car becomes 16 times that of initial energy.

The correct option is A.