Newton's first law states that an object at rest will stay at rest, and an object in motion will stay in motion with the same velocity, unless acted upon by an external force. In this scenario, the puck stays in motion across the ice until it is hit by the second player, who exerts an external force on it.
Newton's second law states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. This law applies when the puck is hit by the second player, as the force applied by the player causes the puck to accelerate and change its direction.
Newton's third law states that for every action, there is an equal and opposite reaction. When the puck is hit by the second player, the action is the force applied by the player on the puck, and the reaction is the force exerted by the puck on the player. This force pushes the player backward slightly, as a reaction to hitting the puck.
Patrick Kane of the Chicago Blackhawks hits the puck hard, and it takes off across the ice. The pick travels in a straight line at constant speed. The puck is then hit by a second player, who launches the puck up towards an opponents helmet. The puck hits so hard that it damages the helmet.
Describe how each of Newton’s 3 laws applies here.
Newton’s first:
Newton’s second:
Newton’s third:
1 answer