Refer to Conceptual Example 3 as an aid in understanding

Chapter , Problem 7

(choose chapter or problem)

Refer to Conceptual Example 3 as an aid in understanding this problem. A hockey goalie is standing on ice. Another player fi res a puck (m 5 0.17 kg) at the goalie with a velocity of 165 m/s. (a) If the goalie catches the puck with his glove in a time of 5.0 3 1023 s, what is the average force (magnitude and direction) 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 265 m/s. The puck and stick are in contact for a time of 5.0 3 1023 s. Now what is the average force exerted on the goalie by the puck? Verify that your answers to parts (a) and (b) are consistent with the conclusion of Conceptual Example 3.