A 20.0 kg object is dropped off of a 30.0 m cliff. How fast is the object going when it hits the ground?

Physics for Scientists and Engineers, Technology Update (No access codes included)
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Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 2.12OQ: A pebble is dropped from rest from the lop of a tall cliff and falls 4.9 m after 1.0 s has elapsed....
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2. A 20.0 kg object is dropped off of a 30.0 m cliff. How fast is the object going when it hits the
ground?

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