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G.c.c.mkd physics

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A 5kg mass is dropped from a height of 30m above the ground. Determine the velocity of the mass when it is 18n above the ground take = 10m/s2

  • G.c.c.mkd physics - ,

    v = vi - g t
    h = ho - 4.9 t^2
    18 = 30 - 4.9 t^2
    t^2 = 2.45
    t = 1.56 seconds
    v = 0 - 9.8* 1.56
    v = - 15.3 m/s
    or
    15.3 m/s down

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