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A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf c

ID: 2115512 • Letter: A

Question

A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf club was in contact with the ball for 5.0times10-3 s. Find (a) the impulse imparted to the golf ball, and (b) the average force exerted on the ball by the golf club. A softball player swings a bat, accelerating it from rest to 3.0 rev/s in a time of 0.20 s. Approximate the bat as a 2.2-kg uniform rod of length 0.95 m(I = 1/3 ML2). What is the torque the player applies at one end of the bar? A 0.50-kg mass is attached to a spring of spring constant 20 NM along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the amplitude of vibration? A 4.0-kg object is attached to a spring of spring constant 10N/m. The object is displaced 5.0 can from the equilibrium position and let go. What is the period of vibration?

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