A stroboscopic photo of a club hitting a golf ball, such as the photo shown in the figure below, was made by Harold Edgerton in 1933. The ball was initially at rest, and the club was shown to be in contact with the ball for about 0.0020 s. Also, the ball was found to end up with a speed of 2.0 x 102 ft/s. Assuming that the golf ball had a mass of 55 g, find the average force exerted by the club on the ball. kN TOUTE
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- Two ice skaters stand together as illustrated in Figure (a) below. They "push off" and travel directly away from each other, the boy with a velocity of v = 0.720 m/s to the left. If the boy weighs 733 N and the girl weighs 486 N, what is the girl's velocity (in m/s) after they push off? (Consider the ice to be frictionless.) ν ?A 0.7 ball falls down and hits the floor at a speed of 15 m/s. The ball then bounces back up at aspeed of 12 m/s. If the ball was in contact with the floor for 0.06 s, what was the average force from the floor on the ball?A baseball with a mass of 148 g is thrown horizontally with a speed of 39.1 m/s (87 mi/h) at a bat. The ball is in contact with the bat for 1.00 ms and then travels straight back at a speed of 45.3 m/s (101 mi/h). Determine the average force exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the incoming ball to be positive. (Indicate the direction with the sign of your answer.)
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