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15 July, 17:15

A 7.0 kg bowling ball traveling at 2.0 m/s collides with a stationary 0.5 kg beach ball in

an elastic collision. The bowling ball leaves the collision with a velocity of 1.5 m/s

traveling in the same direction as the beach ball.

Calculate the speed of the beach ball.

A 1.0 m/s

B 2.0 m/s

C 3.5 m/s

D 7.0 m/s

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Answers (1)
  1. 15 July, 20:13
    0
    D 7.0 m/s

    Explanation:

    MU+mu=MV+mv

    7*2+0.5*0 = 7*1.5+0.5*v

    14+0=10.5+0.5v

    14-10.5 = 0.5v

    3.5=0.5v

    0.5v0.5 = 3.5/0.5

    v = 7m/s
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