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-   -   Kinetic Energy (https://www.askmehelpdesk.com/showthread.php?t=829379)

  • Dec 16, 2016, 05:56 AM
    Shira S
    Kinetic Energy
    A ping pong pall that is thrown at a velocity of 10m/s at an angle of 30 degrees to the horizontal hits a vertical wall while it is at the peak of it's height, and returns from the wall horizontally. As a result of hitting the wall, the ball loses 20% of its kinetic energy.

    Find:
    A. The height of the wall
    B. The velocity of the ball when it hits the wall
    C. The velocity of the ball after it's collision with the wall
  • Dec 16, 2016, 06:34 AM
    ebaines
    Please show us your attempt to work this out yourself. If you get stuck show us where your difficulty is, and we'll help you through it.

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