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Mechanical Engineering

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a tennis ball was held 4.5 ft above the surface of a tennis court and was thrown vertically downward with an initial velocity whose magnitude was 12 fps. determine the magnitude of the velocity of the ball just before it struck the surface of the court

  • Mechanical Engineering -

    This is engineering? Hmmmm.


    Vf^2=Vi^2 + 2 ad

    Vf^2=12f/s+2*-32f/s^2*-4.5

    Vf^2=288

    Vf=12 sqrt2 fps

    check that

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