How is newtons 3 laws of motion used in a game of knock hockey?

Answer 1

We'll start with the First Law, concerning inertia. It states that a resting object will not move until an outside force moves it, and that a moving object will keep moving in a particular direction and at a particular speed until an outside force stops it, slows it down, or speeds it up.

Let's apply that to knock hockey. When you put the puck on the table, it will stay where it is until a player hits it with his stick. When the puck is moving, it'll keep moving in the direction it's going until it hits an obstacle (a wall, another player's stick, etc.). Another outside force acting on the moving puck is the friction between the table and the puck, which serves to slow the puck down.