Answer the following

Distinguish between potential energy and kinetic energy of a body.

Fill in the blanks with suitable words

1. Unit of power is _________ .

2. Unit of energy is _________ .

3. If a candle is burnt, the chemical energy is transformed into __________ .

4. The water stored in an overhead tank possesses _________ energy.

5. In a cinema theatre electrical energy is transformed into ________and__________ energy.

Answer the following

State whether the energy possessed in the following is kinetic or potential;

Compressed spring, stretched bow, moving arrow, water stored in a dam, a stone at the top of a building, bird resting on the branch of a tree.

Answer the following

A bus and a car are moving at the same speed. Which of the two has a greater kinetic energy?

Answer the following

A ball of mass 200g falls from a height of 5m. What is its kinetic energy when it just reaches the ground?(g = 9.8 ms^-2)