During a game of pool, the 9 ball is accelerating forward at a rate of 3.2 m/s2

to the right when it hits the stationary 2 ball. Each ball has a mass of 0.16 kg.
According to Newton’s Third Law of Motion, what force does the 2 ball apply to the 9 ball?

0.51 N
0 N
3.2 N
20 N

According to Newton's Third Law of Motion, the force that the 2 ball applies to the 9 ball is equal in magnitude and opposite in direction to the force that the 9 ball applies to the 2 ball.

Therefore, the force that the 2 ball applies to the 9 ball is also 3.2 N, the same as the force that the 9 ball applies to the 2 ball.