- #1

- 6

- 1

## Homework Statement

A ball is thrown down with an initial velocity of 2.0 m/s from a height of 1.75 m, determine how long until it hits the ground.

initial velocity = 2 m/s

distance = 1.75 m

acceleration = 9.8 m/s

^{2}

time = ?

## Homework Equations

d=v

_{i}t+1/2a(t)

^{2}

## The Attempt at a Solution

1.75=2t + 1/2(9.8)t

^{2}

1.75=2t + 4.9t

^{2}

Square root of both sides???

1.32 = 1.4t + 2.21t

1.32 = 3.61t

All divided by 3.61???

t = 0.36

.... I know the solution to be 0.43 seconds, but can't get there!

Any help is greatly appreciated!