Height of pier above water- projectile motion

AI Thread Summary
A swimmer dives off a pier at a speed of 1.80 m/s and lands 0.80 m from the edge. The time taken to hit the water is calculated as 0.44 seconds. Using the projectile motion equations, the height of the pier above the water is determined to be approximately 0.97 m. The calculations and significant figures have been verified as correct. The swimmer's dive demonstrates the principles of projectile motion effectively.
dani123
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Homework Statement



A swimmer moving at 1.80m/s, dives off a pier and hits the water 0.80m from the edge of the pier. How high is the pier above the water?


Homework Equations



dv=1/2*at2
dh=Vh*Δt
a=9.8

The Attempt at a Solution



dh=0.80m
Vh=1.80m/s
dv=?
t=?

First started by solving for Δt in the dh=Vh*Δt equation and found that Δt=0.44s

Then I plugged it into the dv=1/2*at2 equation

dv=0.97m

I would like for someone to just verify that my answers are correct and the significant figures are being respected. Thanks in advance!
 
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yep, all correct. very good.
 

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