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Q. A golfer drives a 0.046kg golf ball from an elevated tee, giving the ball an initial horizontal velocity of 45 m/s. (a) what is the magnitude of the average force exerted by the club on the ball if the contact time for the golf club on the ball during impact is 0.9 milliseconds? (b) assume a better golfer uses the same average force as the golfer in part(a) but "follows through" on the swing to increase the contact time of the golf club to the ball to 1.4 ms. what effect would this change have on an initial horizontal sped of the drive?

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