Question

A particle is thrown vertically upwards. If its velocity is half of the maximum height is `20 m//s`, then maximum height attained by it is
A. 25 m
B. 30 m
C. 35 m
D. 40 m

Answer 1

Correct Answer - D
Let `H`: maximum height

`O` to `A: (20)^(2)=u^(2)-2g.H/2 …(i)`
`O` to `B: 0=u^(2)-2g H …(ii)`
`H=40 m `