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## Homework Statement

Object dropped from a tower at height of 71.3 metres

What is the time it takes to hit the ground? What is the velocity when it does?

gravitational acceleration = 9.8m/s

^{2}

## Homework Equations

V = ΔX/Δt

X = average velocity X time

## The Attempt at a Solution

I don't know a formula that would enable me to get the time.