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The same rock is dropped from a cliff and falls 85 m before hitting the ground. a. How fast did the rock hit the ground? (41.2 m/s) b. How long did it take the rock to fall? (4.12 s) c. What was the acceleration at 3 s? (-10 m/s?)

The same rock is dropped from a cliff and falls 85 m before hitting the ground. a. How fast did the rock hit the ground? (41.2 m/s) b. How long did it take the rock to fall? (4.12 s) c. What was the acceleration at 3 s? (-10 m/s?)

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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6.) The same rock is dropped from a cliff and falls 85 m before hitting the ground. a. How fast did the rock hit the ground? (41.2 m/s) b. How long did it take the rock to fall? (4.12 s) c. What was the acceleration at 3 s? (-10 m/s?)
Transcribed Image Text:6.) The same rock is dropped from a cliff and falls 85 m before hitting the ground. a. How fast did the rock hit the ground? (41.2 m/s) b. How long did it take the rock to fall? (4.12 s) c. What was the acceleration at 3 s? (-10 m/s?)
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