Teeing Off A golf club has a lightweight flexible shaft with a heavy block of wo

Question

Teeing Off A golf club has a lightweight flexible shaft with a heavy block of wood or metal (called the head of the club) at the end. A golfer making a long shot off the tee uses a driver, a club whose 300g head is much more massive than the 46g ball it will hit. The golfer swings the driver so that the club head is moving at 41m/s just before it collides with the ball. The collision is so rapid that it can be treated as the collision of a moving 300g mass (the club head) with a stationary 46g mass (the ball); the shaft of the club and the golfer can be ignored. The collision takes 7.2ms , and the ball leaves the tee with a speed of 71m/s .


What is the speed of the club head immediately after the collision?

Explanation / Answer

KE of ball after collision = 0.5 m v2 = 115.943 J

Initial Total KE before collision = 0.5 m v2 = 252.15 J

Efficiency of energy transfer to the ball = KE of ball/ Initial KE = 0.4598 0.46

46% of energy is transfered fro club to ball.

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