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50 POINTS PLEASE ANSWER CORRECTLY
Two balls collide on a pool table. Before the collision, ball 1 is traveling with a speed of 4 m/s, and ball 2 is at rest. After the collision both balls are in motion.
What has happened in this collision?

A. There was no change in ball 2's velocity, therefore momentum was not conserved.

B. Ball 2's velocity decreased, and it gained some of ball 1's momentum.

C. Ball 1's velocity decreased, and it gained momentum.

D. Ball 2's velocity increased, and it gained some of ball 1's momentum.

Sagot :

Answer:

D

Explanation:

With the collision, obviously Ball 2's velocity increased, while Ball 1 slowed down a little bit due to the impact. This decrease in velocity caused a decrease in Ball 1's Momentum. Satisfying both conditions, option D is right.

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