Which of the following is not one of Newton’s laws of motion?
- The total momentum of a system of interacting bodies remains constant, providing no external force acts.
- The rate of change of momentum of a body is directly proportional to the external force acting on the body and takes place in the direction of the force.
- If a body A exerts a force on body B, then body B exerts an equal and oppositely-directed force on body A.
- A body continues in a state of rest or of uniform motion in a straight line unless acted upon by some external force.
- For every action, there is an equal and opposite reaction.