A hockey goalie is standing on ice. Another player fires a puck (m = 0.10 kg) at the goalie with a velocity of +62 m/s

(a) If the goalie catches the puck with his glove in a time of 2.0 10-3 s, what is the average force (magnitude and direction) exerted on the goalie by the puck?=___N

(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 −62 m/s. The puck and stick are in contact for a time of 2.0 10-3 s. Now what is the average force exerted on the goalie by the puck? =_____ N