Question

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

Answer 1

Explanation:

ANSWER

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=

2g

u

2

Answer 2

the body that is thrown vertically upward with maximum height velocity of body = 0 use kinetics formula,

${v}^{2} = {u}^{2} + 2as$

here v=0

a=-g

s=H

$0 = {u}^{2} - 2gh$

$h = {u}^{2} \div 2g$

hence maximum height attained by body ,

${u}^{2} \div 2g$