Projectile Motion Question: Solving for Height of Pier Above Water

[JonathanSnow]

[SOLVED] Projectile Motion Question

Homework Statement

a swimmer moving at 1.80m/s dives off a pier and hits the water .80 m from the edge of the pier how high is the pier above the water

Homework Equations

Vx=change X /change Time
change Y = Vyi . change Time +1/2 a . (change time)^2

The Attempt at a Solution

i found time with the Vx formula to be .44m/s
then i punched it into the change Y formula to get the height of the pier as 0.94 m

im just wondering if i approached it right and by change i mean the displacement triangle i just don't know how to make the symbol sorry

thanks ahead of time

 

[Snazzy]

Looks good, but don't round any of your answers until you get your final answer and your time is supposed to be in units of s, not m/s.

 

[JonathanSnow]

woops a typo there and i didnt round on paper i just wanted to make sure i had it right thanks a lot !