College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 3, Problem 10CQ
A baseball is thrown from the outfield toward the catcher. When the ball reaches its highest point, which statement is true? (a) Its velocity and its acceleration are both zero, (b) Its velocity is not zero, but its acceleration is zero, (c) Its velocity is perpendicular to its acceleration, (d) Its acceleration depends on the angle at which the ball was thrown, (c) None of statements (a) through (d) is true.
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"Which is an accurate statement for general projectile motion, when the projectile is at the highest point of its trajectory?"
Its acceleration is zero.
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Its velocity and acceleration are both zero.
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1) A kicked football.A football is kicked at an angle 0=37.0° with a velocity of 20.0m/s, as shown. Calculate (a) the maximum height, (b) the timeof travel before the football hits the ground, (c) how far away ithits the ground, (d) the velocity vector at the maximum height,and (e) the acceleration vector at maximum height. Assume theball leaves the foot at ground level, and ignore air resistanceand rotation of the ball.
A ball is kicked with an initial velocity of 17.0 m/s in the horizontal direction and 14.0 m/s in the vertical direction. (Assume the ball is kicked from the ground.)
a) at what speed (in m/s) does the ball hit the ground ? b) for how long (in s) does the ball remain the air ? c) what maximum height (in m) is attained by the ball?
Chapter 3 Solutions
College Physics
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