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6 July, 17:14

A (n) 0.49 kg softball is pitched at a speed of 13 m/s. The batter hits it back directly at the pitcher at a speed of 23 m/s. The bat acts on the ball for 0.014 s. What is the magnitude of the impulse imparted by the bat to the ball?

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  1. 6 July, 17:31
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    Impulse = 4.9 kgm/s

    Explanation:

    Impulse is given by change of momentum.

    Mass of softball = 0.49 kg

    Initial velocity of softball = 13 m/s

    Initial momentum = 0.49 x 13 = 6.37 kgm/s

    Final velocity of softball = 23 m/s

    Final momentum = 0.49 x 23 = 11.27 kgm/s

    Change of momentum = Final momentum - Initial momentum

    Change of momentum = 11.27 - 6.37

    Change of momentum = 4.9 kgm/s

    Impulse = Change of momentum

    Impulse = 4.9 kgm/s
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