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A rubber ball is attached to a paddle by a rubber band. The ball is initially moving away from the paddle with a speed of 4.5 m/s. After 0.30 s, the ball is moving toward the paddle with a speed of 2.0 m/s. What is the average acceleration of the ball during that 0.30 s?

  • Physics -

    a=(V-Vo)/t = (-2-4.5)/0.3=-21.67 m/s^2

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