94394 - Physics 2211 Fall 2009 Lab 3 Quiz 1 Name Key...

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Physics 2211 Fall 2009, Lab 3, Quiz 1 Name: Key Section Score: Show all work clearly and in order, and box your final answers . By writing your name on this quiz you agree that this quiz was taken in accordance with the Georgia Tech Honor Code. In the accompanying figure a 0.5 kg hockey puck is sliding along the ice with a velocity < 10 , 0 , 0 > m/s. As the puck slide past loca- tion < 1 , 0 , 3 > m on the rink, a player strikes the puck with a sudden force in the +z di- rection, and the hockey stick breaks. Some time later, the puck’s position on the rink is < 10 , 0 , 30 > m. When we pile weights on the side of a hockey stick we find that the stick breaks under a force of 1000 N. 1. ( 20 points ) In the space below, make a sketch of the path of the puck before and after it is hit The remainder of this quiz is on the back of the page 1

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2. ( 80 points ) For approximately how much time Δ t was the hockey stick in contact with the puck? First, assume that the force exerted by the hockey stick is constant during the time of contact and has a magnitude equal to the breaking force of the stick (i.e.,
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