a ball (mas .40) is initially moving to the left at 30m/s. After hitting the wall, the ball is moving to the right at 20 m/s. What is the im

Question

a ball (mas .40) is initially moving to the left at 30m/s. After hitting the wall, the ball is moving to the right at 20 m/s. What is the impulse of the net force on the ball during its colllision with the wall

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Khải Quang 1 month 2021-08-15T05:23:43+00:00 1 Answers 0 views 0

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    2021-08-15T05:25:26+00:00

    Answer:

    The impulse is -20kg m/s.

    Explanation:

    given mass of ball =  0.4 kg

    The ball is moving towards left with the initial velocity = 30m/s

    The momentum in left direction P1 = mv1

    = (0.4)(30)

    = 12 kg m/s

    The given velocity towards right = -20 m/s ( negative sign shows inverse direction)

    Momentum towards right, P2 = mv2

    P2 = (0.4)(-20)

    P2 = -8 kg m/s

    The Impulse = change in momentum

    = P2 –P1

    = -8-12

    = -20 kg m/s

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