physics

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A player kicks the football from the ground with a velocity of of 30m/s at 45 degree angle. The time take to reach maximum height was 0.7 s. Find the maximum height and describe your work.

  • physics -

    vf=Vivertical-gt
    but vf in the vertical is zero at the top, so
    0=Vi*sin45-9.8t
    solve ford Vi

    Height= vivertical*t-1/2 g t^2
    = Vi*sin45*t-1/2 g t^2

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