A hockey goalie is standing on ice. Another player fires a puck (m = 0.17kg) at the goalie with a velocity of 43.1m / s, 

(a) If the goalie catches the puck with his glove in a time of 2.61*10^ -3 s what is the magnitude of the average force exerted on the goalie by the puck ? 

(b) Instead of catching the puck, the goalie slaps it with his stick and returns the puck straight back to the player with a velocity of -43.1 m / s The puck and stick are in contact for a time of 2.61*10^ -3 s . Now, what is the magnitude of the average force exerted on the goalie by the puck?

Answer rating: 100% (QA)

First of all lets understand that the average force is described as the change in momentum divided by the change in time according to the following eq... View the full answer