- #1

Shahab Mirza

- 28

- 0

## Homework Statement

A body is thrown upward and remains in air for 10 seconds , the initial velocity at which it was thrown in is?

## The Attempt at a Solution

g = -10 , t = 10 s , vf = 0 , vi = ?

Vf = vi + gt

0=vi + (-10) (10)

Vi = 100

but its answer is not 100 its answer is 50 help me please , where I did a mistake ? Thanks[/B]