A baseball player extends his arm straight up to catch a 145-g baseball moving

Chapter 11, Problem 31

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A baseball player extends his arm straight up to catch a 145-g baseball moving horizontally at 42 m/s. Its 63 cm from the players shoulder joint to the point the ball strikes his hand, and his arm remains stiff while it rotates about the shoulder during the catch. The players hand recoils 5.00 cm horizontally while he stops the ball. What average torque does the players arm exert on the ball?

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