1177450868

# 1177450868 - HW Chapter 8 8.7 Force of a Golf Swing. A...

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HW Chapter 8 8.7 Force of a Golf Swing . A 0.0450-kg golf ball initially at rest is given a speed of 25.0 m/s when a club strikes. If the club and the ball are in contact for 2.00 ms, what average force acts on the ball? Is the effect of the ball’s weight during the time of contact significant? Why and why not? 8.12 A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 50.0 m/s, and it leaves the bat traveling to the left at an angle of 30 ° above horizontal with a speed of 65.0 m/s. If the ball and bat are in contact for 1.75 ms, find the horizontal and vertical components of the average force on the ball. 8.27 A hockey puck B rests on a smooth ice surface and is struck by a second puck A, which was originally traveling at 40.0 m/s and which is deflected 30.0 ° from its original direction (Fig. 8.33). Puck B acquires a velocity at a 45.0 ° angle to the original direction of A. The pucks have the same mass. a) Compute the speed of each puck after the

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## This note was uploaded on 09/08/2008 for the course PHYS 4A taught by Professor D.v during the Spring '07 term at Evergreen Valley.

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1177450868 - HW Chapter 8 8.7 Force of a Golf Swing. A...

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