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24 October, 14:58

Assuming constant velocities, if a fastball pitch is thrown and travels at 40 m/s toward home plate, 18 m away, and the head of the bat is simultaneously traveling toward the ball at 18.0 m/s, how much time elapses before the bat hits the ball? a. About 0.3 sb. About 0.6 sc. About 0.9 sd. About 1.2 s

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  1. 24 October, 15:56
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    Option A is the correct answer.

    Explanation:

    Here velocity of ball and bat are in opposite direction.

    Velocity of ball = 40 m/s

    Velocity of bat = 18 m/s

    Since they are in opposite direction relative velocity is given by,

    Relative velocity = 40 + 18 = 58 m/s

    Distance to home plate = 18 m

    We have

    Displacement = Velocity x Time

    18 = 58 x Time

    Time = 0.3 seconds

    Option A is the correct answer.
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