Physics Fundamentals
Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 2, Problem 4P
To determine

The magnitude and direction of the average acceleration of the ball.

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A toy rocket has an engine that causes it to accelerate upwards at a rate of 3.50 m/s². It is launched from an unknown height above the ground by turning the engine on. Exactly 5.00 s after the launch, the engine turns off, and eventually the rocket falls all the way to the ground. The total time the rocket is in the air is 11.0 s. From what height above the ground was the rocket initially launched?
A football player, starting from rest at the line of scrimmage, accelerates along a straight line for a time of 4.60 s. Then, during a negligible amount of time, he changes the magnitude of his acceleration to a value of 1.04 m/s². With this acceleration, he continues in the same direction for another 2.29 s, until he reaches a speed of 6.66 m/s. What is the value of his acceleration (assumed to be constant) during the initial 4.60 -s period? Number Units
While warming up before the match, Serena Williams is gently bouncing a tennis ball up and down on her racket. She then gives it a powerful upward hit from an initial height of 0.80 m and sends it traveling perfectly vertically. After rising to its maximum height, the ball falls back down to the court. Given that the ball was in the air for a total of 1.91 s, determine its velocity upon hitting the court.
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Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY