Chapter 3.3, Problem 25R

To determine

To explain: The effect on the momentum of two billiard balls that is collides.

Explanation of Solution

Introduction: According to Newton’s third law of motion, every action force has equal and opposite reaction force.

When the billiard balls are collide with each other then they will apply force on each other. According to Newton’s third law, both balls will apply a reaction force on each other and the direction of forces is opposite. So, after the collision the billiard balls start moving in opposite direction.

Conclusion:

Hence, after the collision the billiard balls will start moving in opposite direction.