# 03.2

From TuHSPhysicsWiki

## Contents

## A ball rolls off the edge of a cliff. The instant it leaves the edge, it has an initial horizontal velocity of 17.3 m/s, and it strikes the ground after 1.56 seconds.

### Problem One

How high is the cliff? (11.9 m)

### Problem Two

How far from the base of the cliff does the ball land? (27.0 m)

### Problem Three

What is the speed of impact? (23.1 m/s)

Horizontal

s u = 17.3 m/s v a = 0 (horizontally) t = 1.56 s

Vertical

s u = 0 (purely horizontal) v a = -9.81 m/s/s (on earth) t = 1.56 s