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## Homework Statement

A backpacker throws a rock horizontally off of a cliff with an initial velocity of 11.7 m/s, and the rock lands 17.3 m away from the base of the cliff. What is the final vertical velocity of the rock? Round your answer to 2 decimal places.

## Homework Equations

Δd = vot + 1/2at2

vf = vo + at

vf^2 = vo^2 + 2aΔd

## The Attempt at a Solution

18.9 m/s