Question

a child winds his toy car by moving its key. name the type of energy

1)used up in the process

2)energy transformation taking place in it

3)the car then runs on the floor, what is the energy transformation?

Answer 1

On moving the key, he is using his muscular energy, which is stored in the form of potential energy.
When the car runs, this potential energy is transformed into kinetic energy.
Thus, the energy transformation is:
Muscular energy-> Potential energy-> Kinetic energy