When a rock thrown straight up reaches its maximum height, its velocity is?

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19-03-2017
Physics

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When a rock thrown straight up reaches its maximum height, its velocity is?

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AbhiGhost AbhiGhost · Answer 1 · 2017-03-19T14:21:41+01:00

AbhiGhost AbhiGhost

19-03-2017

Using kinematic equation,
V² - U² = -2ah (minus g is in downward direction)
At highest point, final velocity will be zero. i.e V = 0.
∴ -U² = -2ah
U = √2gh (where a = g and h = maximum height achieved)

You can find velocity if h is given to you.

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