Assume acceleration due to gravity is −32 ??/?2. A ball is thrown vertically upwards from a platform 7 feet above the ground. After 3 seconds, the ball is 3 feet below the platform, i.e., ?(3) = 7−3 = 4 feet. Find the initial velocity of the ball.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 11P: A particle moves along the x axis according to the equation x = 2.00 + 3.00t 1.00t2, where x is in...
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Assume acceleration due to gravity is −32 ??/?2. A ball is thrown vertically upwards from a platform 7 feet above the ground. After 3 seconds, the ball is 3 feet below the platform, i.e., ?(3) = 7−3 = 4 feet. Find the initial velocity of the ball.

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