- #1

nirajnishad

- 16

- 0

## Homework Statement

A ball is dropped from a balloon going up at a speed of

7 m/s. If the balloon was at a height 60 m at the time

of dropping the ball, how long will the ball take in

reaching the ground ?

## Homework Equations

u = –7 m/s, s = 60 m, a = g = 10 m/s^2

## The Attempt at a Solution

i tried solving it by using D=ut+1/2at^2

n got stuck wit this 5t^2+7t-60=0

can anyone tell me a simpler say to solve this equation?