Question
A body whose momentum is constant must have a constant
- force
- velocity
- acceleration
- all of these
Answer
velocity
Explanation
A body whose momentum is constant must have a constant velocity. This is known as the law of conservation of momentum. In the absence of external forces, the total momentum of a system remains constant. If the momentum of a body is constant, it means that there is no net external force acting on the body, and therefore the body will continue to move at a constant velocity.
