A ball is dropped from rest from the top of a cliff that is 19.1 m high. From ground level, a second ball is thrown straight upward at the same instant that the first ball is dropped. The initial speed of the second ball is exactly the same as that with which the first ball eventually hits the ground. In the absence of air resistance, the motions of the balls are just the reverse of each other. Determine how far below the top of the cliff the balls cross paths. Number Units

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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A ball is dropped from rest from the top of a cliff that is 19.1 m high. From ground level, a second ball is thrown straight upward at the
same instant that the first ball is dropped. The initial speed of the second ball is exactly the same as that with which the first ball
eventually hits the ground. In the absence of air resistance, the motions of the balls are just the reverse of each other. Determine how
far below the top of the cliff the balls cross paths.
Number
Units
Transcribed Image Text:A ball is dropped from rest from the top of a cliff that is 19.1 m high. From ground level, a second ball is thrown straight upward at the same instant that the first ball is dropped. The initial speed of the second ball is exactly the same as that with which the first ball eventually hits the ground. In the absence of air resistance, the motions of the balls are just the reverse of each other. Determine how far below the top of the cliff the balls cross paths. Number Units
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