- #1

- 82

- 0

## Homework Statement

A lit firecracker is shot straight up into the air at a speed of 54.00 m/s. How high is it above ground level 5.4000 s later when it explodes?

______ m

How fast is it moving when it blows up?

______ m/s

How far is it from its maximum possible height? Ignore drag and take g equal to 9.800 m/s

______ m

## Homework Equations

highest point - v^2 = vo^2+2g(x-x0)

v=d/t

## The Attempt at a Solution

v^2=vo^2 + 2g(x-x0)

0=(54^2)+2(9.8)(x)

-2916=19.6x

ignore -sign

x = 148.78 m (highest pt)

v=d/t

54=d/5.4

d= 291.6 m (for part one, doesn't make sense, greater than the highest point?)