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Physics

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During a free kick at a soccer playoff game a 0.7 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 39.8 J. How fast was the ball booted by the player on the field?

  • Physics -

    keinitial+PE initial=kepeak+PEpeak
    keinitial+0=39.8+.7*g*14.7
    1/2 m v^2=39.8+.7*g*14.7
    solve for v

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