# Say what energy changes are taking place: a)clockwork toy b)boy kicking soccer ball c)boiling...

## Question:

Say what energy changes are taking place: a)clockwork toy b)boy kicking soccer ball c)boiling kettle on a gas ring d)person walking upstairs What are the wasted energy in a) b) c) and d)?

## Conservation Of Energy:

Conservation of energy is the principle that says that energy cannot be created and cannot be destroyed in the process but can be converted into one form into another and For example while doing any work the work applied on the object changes the kinetic energy of the object.

(1)

In the clockwork toy when the key is rotated then the muscular energy is stored as the spring potential energy and then the spring potential energy will change into kinetic energy in order to make the toy move.

(2)

When the boy kick the soccer than the muscular energy stored inside the boy's body will be used in order to change the potential energy of the ball to the kinetic energy gained by the ball.

(3)

When the kettle is heated then the heat energy will be transferred to the water inside and increases the kinetic energy of the molecule and that kinetic energy will heat up the liquid more.

(4)

A person walking upstairs is using his muscular energy in order to overcome the potential energy and convert it into kinetic energy.