A diver springs upward with an initial speed of 1.7 m/s from a 3.0 m board.(adsbygoogle = window.adsbygoogle || []).push({});

a. Find the velocity with which he strikes the water. (Hint: When the diver reaches the water, his displacement is y = -3.0 m (measured from the board), assuming that the downward direction is chosen as the negative direction.)

b. What is the highest point he reaches above the water?

I tried using this equation, but my answer was wrong. Can someone tell me what I did wrong?

Part a:

d=v*t + 1/2 at^2

-3.0=1.7t + 1/2(-9.80)t^2

4.9t^2 - 1.7t -3.0=0

t= 0.98s

v=d/t

v=3/0.98

v=3.06m/s

I didn't do Part b because Part a was wrong!!

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# Homework Help: Physics Homework Problem

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