A ball thrown up from a rooftop of height 40 m lands on the ground in 4.2 s.?

a) What is the maximum height above the ground?

b) What is its speed 19 m below the rooftop?

2 Answers

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  • 9 years ago
    Favorite Answer

    a) Maximum height = 46.253 m

    b) Velocity at 21 m (19 m below rooftop) = 22.258 m/s

    Source(s): I'm an engineering grad.
  • 9 years ago

    For a) the maximum height is 86.436 m I think.

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