Question

A body is thrown vertically upward from a point `A` 125 m above the ground. It goes up to a maximum height of 250 m above the ground and passes through `A` on its downward journey. The velocity of the body when it is at a height of 70 m above the ground is `(g=10 m//s^(2))`
A. `20 m//s`
B. `50 m//s`
C. `60 m//s`
D. `80 m//s`

Answer 1

Correct Answer - C
The body is freely falling from a height of 250 m its velocity at a height of 70 m from the ground means velocity of freely falling body after travelling 180 m.
`v=sqrt(2gh)`