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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)


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


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