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physics

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stephanie serves a volleyball from a height of .8m and gives it an initial velocity of 7.6m/s straight up. how high will it go? how long will it take to reach maximum height?

  • physics - ,

    YOu can use energy relationships.

    Initial energy= final PE
    mg*.8+ 1/2 m 7.6^2=mgh
    solve for final h.

    How long? how long does it take to fall back?

    hf=hi-1/2 g t^2
    .8=h-4.9 t^2 solve for t, using h above.

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