24.

What do you mean by the term Energy ? Discuss about kinetic and potential energy with suitable example from sports.

KINETIC ENERGY
1. An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity.

2. A baseball thrown by a pitcher, although having a small mass, can have a large amount of kinetic energy due to its fast velocity.

3. A downhill skier traveling down a hill has a large amount of kinetic energy because of their mass and high velocity.

4. A golf ball sitting on a tee before it is struck has zero kinetic energy because its velocity is zero.

1. A rock sitting at the edge of a cliff has potential energy. If the rock falls, the potential energy will be converted to kinetic energy.

2. Tree branches high up in a tree have potential energy because they can fall to the ground.

3. A stick of dynamite has chemical potential energy that would be released when the activation energy from the fuse comes into contact with the chemicals.

4. The food we eat has chemical potential energy because as our body digests it, it provides us with energy for basic metabolism.