Force cannot change the state of motion of a body.
A number of forces acting on a body do not cause any change in its state of rest or of uniform motion. The forces are:
A force is needed to: (a) change the state of motion or state of rest of the body (b) keep the body in motion (c) keep the body stationary (d) keep the velocity of body constant.
What are equal and opposite forces acting on a body which do not change its state of rest or uniform motion called?