A ping – pong ball strikes a wall with a velocity of 10 ms -1. If the collision is perfectly elastic, find the velocity of ball after impact

A ping - pong ball strikes a wall with a velocity of 10 ms -1. If the collision is perfectly elastic, find the velocity of ball after impact

  1. A

    - 20 ms -1

  2. B

    - 5 ms -1

  3. C

    1.0 ms -1

  4. D

    - 10 ms -1

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    Solution:

    m1u1 + m2u2 = m1v1 + m2v2

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