Question

The quantity that best represents the motion of a rigid body is

• A. its mass.
• B. its speed.
• C. its velocity.
• D. its linear momentum.

Answer 1

The correct option is D its linear momentum.

Mass of a body is the quantity of inertia possessed by it, or in simpler words, it is the measure of resistance that a body can provide to change in its motion.
Speed is the measure of how fast a body is moving.
Velocity is the measure of how fast a body is moving along with its direction.
Linear momentum is the quantity which denoted the motion of body along with its direction.