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Physics

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The ceiling of a classroom is 3.75 m above the floor. A student tosses an apple vertically upward, releasing it 0.5 m above the floor. What is the maximum initial speed that can be given to the apple if it is not to touch the ceiling?

  • Physics -

    h = 3.75 – 0.5 = 3.25 m
    h = v(o) •t - g•t^2/2
    v = 0 = v(o) - g•t.
    v(o) =sqrt(2•g•h) = sqrt (2•9.8•3.25) = 7.98 m/s
    v(o) < 7.98 m/s

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