Question

A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is

a)ulg
b)u^2l2g
c)u^2lg
d)ul2g

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Answer 1

Explanation:

At the greatest height h, a body thrown vertically upward with velocity u will have a final velocity (v) zero.

Answer 2

Answer:

b)u^2/2g

Explanation:

The body that is thrown vertically upward with velocity u will have final velocity v=0 at the greatest height h.

Substituting the given values in the third equation of motion, v^2=u^2+2as

we have 0=u^2-2gh (taking g in the upward direction)

or h=u^2/2g.

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