physic
posted by john .
A diver running 1.8m/s dives out horizontally from the edge of a vertical cliff and 3.0s later reaches the water below. How high was the cliff, and how far from its base did the diver hit the water?

V initial for x axis: 1.8
V initial for y axis: 0.0
Acceleration on x axis: 0
Acceleration on y axis:g=9.81
Δ time: 3
Y final:0
X initial: 0
looking for: Y initial and X final
eqt 211b: Δx=Vi(Δtime)+(a*Δt^2)/2
for x axis:
Δx=Vi(Δt)+ zero (canceled out)
= 1.8(3)=5.4
5.4 m far from base
for y axis:
Δy= zero (canceled)+(a*Δt^2)/2
=(9.81*3^2)/2
=44.1
44.1m is your height of cliff
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