Derivative as velocity and acceleration. Assume the body as a freely-falling body, with air resistance negligble. A stone is dropped from rest from a point 125 meters from thegrounf. Find a) it's velocity when it falls on the ground b) the time it takes the stone to reach the point 80 meters above the ground.

Glencoe Physics: Principles and Problems, Student Edition
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Author:Paul W. Zitzewitz
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Chapter3: Accelerated Motion
Section: Chapter Questions
Problem 71A
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Derivative as velocity and acceleration. Assume the body as a freely-falling body, with air resistance negligble. 

A stone is dropped from rest from a point 125 meters from thegrounf. Find a) it's velocity when it falls on the ground b) the time it takes the stone to reach the point 80 meters above the ground.

 

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