Question

Two balls, each with a mass of 0.5 kg, collide on a pool table. Is the law of conservation of momentum satisfied in this collision? Explain why or why not.

Answer 1

Answer:

Sample Response:

Yes, the law of conservation of momentum is satisfied. The total momentum before the collision is 1.5 kg • m/s and the total momentum after the collision is 1.5 kg • m/s. The momentum before and after the collision is the same.

Explanation:

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Answer 2

YES, THE LAW OF CONSERVATION OF MOMENTUM WAS SATISFIED IN THIS COLLISION.

• Law of conservation of momentum states that- For two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied. Therefore, momentum can neither be created nor destroyed.

• REASON - When two balls collide on a pool table the collision is nearly elastic. An elastic collision is one in which the before and after collision kinetic energy remains reserved. When two balls collide, the one which hits the ball the velocity decreases while the ball which is hit by the velocity increases, hence conserving the momentum.