A rock takes 3.25 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 7.6 m/s.  Calculate the height of the cliff in m.  How long woud it take to reach the gorund if it is thrown straight tdown with the same speed?

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter4: Motion In Two And Three Dimensions
Section: Chapter Questions
Problem 73P: A seagull can fly at a velocity of 9.00 m/s in still air. (a) If it takes the bird 20.0 mm to travel...
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A rock takes 3.25 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 7.6 m/s. 

Calculate the height of the cliff in m. 

How long woud it take to reach the gorund if it is thrown straight tdown with the same speed? 

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