Question

Examples that shows work done on a body is said to be positive, negative and zero

Answer 1

If said work done is in direction of force applied then it's positive work

If work done is opposite to force applied then it's negative work

If work done is zero inspire applied force the it is zero work

Answer 2

Positive work = When we push an object.

Negative work = When we pull an object.

0 work = When we push or pull an object which has more weight than us.

Thanks!