A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the kinetic energy of the light plastic cart is that of the heavy steel cart.

The kinetic energy of the light plastic cart is equal to that of the heavy steel cart.

Explanation:

It is known that both carts are pushed with the same amount of force and they also covered the same distance of 1 m which means both carts have done same amount of work.

W = F.d

From the work energy equation

ΔKE = W

ΔKE = F.d

Since force and distance are same for both carts then the change in kinetic energy would also be equal for both carts.

In order to have greater kinetic energy, a greater force will be required hence resulting in greater work done.

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