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object that is thrown straight up falls back to Earth.

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 21CQ Chapter 2

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 21CQ

object that is thrown straight up falls back to Earth. This is one- dimensional motion. (a) When is its velocity zero? (b) Does its velocity change direction? (c) Does the acceleration due to gravity have the same sign on the way up as on the way down?

Step-by-Step Solution:

Step-by-step solution Step 1 of 3 (a) When an object is thrown straight up, its velocity decreases continuously. Once it attains the peak height, the velocity reduced to zero and then the object starts falling. So, the velocity is zero at the highest point. Step 2 of 3 (b) Yes, direction of velocity of an object changes when it is thrown straight up. Initially, the velocity is in the upward direction when an object is thrown straight up, once it attains the peak height, the velocity reduced to zero and afterwards the object comes down with a negative velocity. The direction of the velocity during downward motion is opposite to the direction velocity during the upward motion. Comment

Step 3 of 3

Chapter 2, Problem 21CQ is Solved
Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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