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:
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.
Newton's first law, also known as the law of inertia, states that an object at rest tends to stay at rest, and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an external force. In this scenario, when Patrick Kane initially hits the puck hard, it starts moving in a straight line at a constant speed due to the force applied by Kane.
Newton's second law, also known as the law of acceleration, states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. When the second player hits the puck, they apply a force to it, causing it to change its direction and accelerate upwards towards the opponent's helmet.
Newton's third law, also known as the law of action-reaction, states that for every action, there is an equal and opposite reaction. When the second player hits the puck, they exert a force on it, and in response, the puck exerts an equal and opposite force on the player's stick. This action-reaction pair of forces allows the puck to change its direction and move towards the opponent's helmet.
Overall, Newton's three laws explain how the initial hit by Kane, the subsequent hit by the second player, and the resulting movement and damage to the opponent's helmet all occur due to the application of forces in accordance with these laws.