A wound spring provides the energy to propel a toy car across a level floor at time ti, the car is moving at a speed vi across the floor and the spring is unwinding, as shown below. At time tf, the spring has fully unwound and the car coasted to a stop.

Question

Which statement best describes the transformation of energy that occurs between the ti and tf?

Answer 1

The statement that best describes the transformation of energy that occurs between ti and tf is:

The potential energy stored in the wound spring is gradually converted into kinetic energy of the toy car during its movement.