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A softball pitcher throws a ball by swinging his arm with an angular speed of 9.81 rad/s. If the pitchers arm is 0.640 m long, what is the tangential speed of the ball just before the pitcher releases it?

  • physics -

    C = pi*2r = 3.14 * 2*0.640 = 4.02 m. =

    V = 9.81rad/s * 4.02m/6.28rad=6.28 m/s.
    = Tangential speed.

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