Question

Which of the following sentences is correct about work?
1. You do some work if you push a wall of a house but the wall
2. If you lift a stone from the surface of the earth, you do work against friction.
3. Work done is measured by the product of force applied and distance travelled.
4. The SI unit of work is Newton per metre.​

Answer 1

Answer:

Work done is measured by the product of force applied and distance travelled.

Answer 2

Answer:

1. False

2.True

3. True

4. False