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Physics

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a long jumper jumps 10m and leaves the ground at an angle of 45 degrees.determine the speed he leaves the the ground at,

  • Physics - ,

    The upward velocity is Vsin45. The horizontal veloicty is Vcos45

    horizontal:
    10m=Vcos45*t
    time= 14.1/V

    Vertical
    Hfinal=hinitial+Vsin45*t- 4.9t^2
    put what we found in for time, solve for v.

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