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## Homework Statement

A sphere is thrown upwards with an initial velocity of 30m/s. A second sphere is dropped from directly above, a height of 60m from from the first sphere, 0.5 seconds later.When do the spheres meet and how high is the point where they meet?Please explain how you got your answer. My teacher got an answer of 1.68sec as the time and 38m as where they meet.

## Homework Equations

xf=xi+vit+1/2at^2

vf^2-vi^2=2Δx(a)

## The Attempt at a Solution

vi=30m/s

Δx=60m

t=0.5 sec

a=-9.8m/s^2