Question

B. Write True or False for the following statements.
1. Work is done whenever a force is applied on a given object.
2.
A stationery ball does not possess kinetic energy.
3.
A ball, raised to a height, is said to possess chemical energy.
4.
The motion, of the blades of a fan, is due to mechanical energy.
5. Sound is a form of energy.​

Answer 1

Answer:

1.F(work is done only if there is displacement)

2.T

3.F(IT POSSESS POTENTIAL ENERGY)

4.T

5.T

Explanation:

Answer 2

Statement 1, 2, 4 and 5 are true.

Explanation:

Statement 1,

Work is done whenever a force is applied on a given object. It is false. It is because, the work done depends on both force, displacement and the angle between force and displacement.

Statement 2,

A stationery ball does not possess kinetic energy. It is true. Kinetic energy is possessed due to motion of an object.

Statement 3,

A ball, raised to a height, is said to possess chemical energy. It is false. The energy possessed due to position of an object is called its potential energy.

Statement 4,

The motion, of the blades of a fan, is due to mechanical energy. It is true. It is based on the conservation of energy.

Statement 5,

Sound is a form of energy. It is true.

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True and False