Class I Help chapter 8 Begin Date: 7/16/2018 12:00:00 AM - Due Date: 7/25/2018 1

Question

Class I Help chapter 8 Begin Date: 7/16/2018 12:00:00 AM - Due Date: 7/25/2018 11:00:00 AM End Date: 7/25/2018 11:00:00 AM (10%) Problem 5: An ice hockey player of mass m1 = 84.5 kg hits a puck of mass m2 = 0.125 kg. giving the puck a speed of v = 41 m/s. 50%Part (a) If both are initially at rest and if the ice is frictionless, how far, in terms of the variables in the problem, does the player recoil in the time it takes the puck to reach the goal, a distance d away? Grade Summary 100 Attempts remaining

Explanation / Answer

(A) Applying momentum conservation,

pi = pf

0 = (0.124 x 41) - (84.5 v)

v = 0.06 m/s

(B) t = d / v = (14 m) / (0.06 m/s)

t = 233 sec

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