Question

A 70-kilogram hockey player skating east on an
ice rink is hit by a 0.1-kilogram hockey puck
moving toward the west. The puck exerts a
50-newton force toward the west on the player.
Determine the magnitude of the force that the
player exerts on the puck during this collision.
[1]

Answer 1

According to Newton's Third Law of Motion, each and every force has an equal and opposite reaction, therefore, the hockey player would exert 50 newtons on the puck as well.

Answer 2

Answer: The player exerts 50N of force on the puck.

Explanation:

We are given that 70kg hockey player hits a puck of 0.1kg and after the collision, the puck exerts a force of 50N in the west direction.

According to Newton's Third law:

Every action has an equal and opposite reaction.

This statement means that if during a collision, one object is experiencing a force then another object will have same magnitude of force in opposite direction.

In the question, puck exerts a force of 50N and moves in west direction which means that the hockey player has exerted a force of 50N from east direction.