If a soccer ball’s mass is 5 kg and a player who weighs kicks the soccer ball forward with a force of 5 N, how much force does the ball exert on the player’s foot, and in what direction?

Responses

1) 5 kg forward
2) 5 N backward
3) 10 N forward
4) 10 kg/N backward

The force exerted by the ball on the player's foot would be equal in magnitude and in the opposite direction. Therefore, the correct response would be:

2) 5 N backward