Question

b) An object of mass 40 kg is been acted upon by a force that changes its velocity from 30 km/h to 25 km/h
How much work is done by the force? Is the work done negative or positive?​

Answer 1

Explanation:

Newton's laws of motion relate an object's motion to the forces acting on it. In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration.

Answer 2

Explanation:

b) An object of mass 40 kg is been acted upon by a force that changes its velocity from 30 km/h to 25 km/h

How much work is done by the force? Is the work done negative or positive?