A hockey puck with a mass of 0.16 kg travels at a velocity of 40 m/s toward a goalkeeper. The goalkeeper has a mass of 120 kg and is at rest assuming a closed system find the total momentum of the goalkeeper and puck after the pick is caught by the goalkeeper in 3-4 sentences identify the object with the greater momentum after the pick is caught and explain your reasoning
The total initial momentum of the system before the puck is caught by the goalkeeper can be calculated as the sum of the momentum of the puck and the momentum of the goalkeeper, which is equal to (0.16 kg * 40 m/s) + (120 kg * 0 m/s). After the puck is caught, the final momentum of the system can be calculated as the sum of the final momentum of the puck and the final momentum of the goalkeeper. Assuming the goalkeeper catches the puck without any recoil or after-effect that changes their momentum, the final momentum of the goalkeeper will be equal to their initial momentum (0 kg * 0 m/s), while the final momentum of the puck will be zero since it is now stationary. Therefore, the object with the greater momentum will be the goalkeeper, with a final momentum equal to their initial momentum.
