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A stone is thrown vertically upward with a speed of 14.0 m/s from the edge of a cliff 89.0 m high

  • physics -

    and...?

  • physics -

    u=14.0 m/s
    a=g= 9.8 m/s
    s=h= 89.0 m
    t=?
    s=ut+1/2at*t
    89=14*t+1/2*9.8*t*t
    89=14*t+4.9*t*t
    later i don't know............
    sorry............

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