Question

When a force retards the motion of a body. What is the nature of the work done by the body? State reasons and list two examples.​

Answer 1

Answer:

Nature : Negative

Explanation:

Examples

1) Application of brakes

2) Frictional force

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Answer 2

Answer:

The work done by the force is negative because this force acts opposite to the direction of movement of the body, thereby hindering the motion. 

Example: 

1. Work done by the force of friction acting opposite to the direction of football. 

2. Work done in Tug of war by losing team.