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physics

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Please help me to solve this problem.

A body is projected vertically upwards with a velocity 20m/s. find the maximum height reached by the body.(g=10m/sec2)

  • physics - ,

    v = Vi + a t
    we want the top where v = 0
    Vi = +20
    a = -10
    so
    0 = 20 - 10 t
    t = 2 seconds to top
    h = Vi t + (1/2) a t^2
    h = 20 (2) - (1/2)(10) (2)^2
    h = 40 - 20
    h = 20

  • physics - ,

    20M

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