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14 March, 23:16

The fast server in women's tennis is Venus Williams, who recorded a serve of 130 (209) in 2007. If her racket pushed on the ball for a distance of 0.10, How much would be the average acceleration of the ball during her serve?

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  1. 15 March, 01:04
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    Ball final speed = 209 km/hr = 58.12 m/s

    Racket displacement = 0.1 meters

    Using the equation of motion:

    2as = v² - u²

    Where the initial velocity u is 0

    a = (58.12) ²/2 * 0.1

    a = 16,889.7 m/s²
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