physics

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if a soccer player kicks a ball at an angle of 36 degrees and it lands 31.4 meters away. what is the initial velocity of the ball

  • physics -

    hf=hi+vivertical*timeinair- 9.8 time^2

    0=0+V*sin36*t-9.8 t^2

    so what is time in air.
    timeinair= 31.4/Vhorizontal= 31.4/Vcos36

    Vsin36*t=9.8t^2
    Vsin36=9.8 t

    V= 9.8/sin36 * 31.4/Vcos36

    V= sqrt (9.8*31.4/sin36cos36)

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