EBK PHYSICS OF EVERYDAY PHENOMENA
8th Edition
ISBN: 8220106637050
Author: Griffith
Publisher: YUZU
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Textbook Question
Chapter 3, Problem 21CQ
For the two balls in question 20, which, if either, has the larger total velocity when it hits the floor? Explain.
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Part A
Jeanette is playing in a 9-ball pool tournament. She will win if she sinks the 9-ball
from the final rack, so she needs to line up her shot precisely. Both the cue ball
and the 9-ball have mass m, and the cue ball is hit at an initial speed of v.
Jeanette carefully hits the cue ball into the 9-ball off center, so that when the balls
collide, they move away from each other at the same angle 0 from the direction in
which the cue ball was originally traveling (see figure). Furthermore, after the
collision, the cue ball moves away at speed vf, while the 9-ball moves at speed
vp. (Figure 1)
Find the angle 0 that the 9-ball travels away from the horizontal, as shown in the figure.
Express your answer in degrees to three significant figures.
> View Available Hint(s)
For the purposes of this problem, assume that the collision is perfectly elastic,
neglect friction, and ignore the spinning of the balls.
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Figure
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F2…
The green marble (m1= 2.6 kg) was in head-on collision to red marble (M2-8.2kg). Before the
collision, the velocities are 7m/s and 5 m/s for the green and red marble respectively. The two
marbles move together after the collision, find the final velocity.
MI
Vli
Vf
V2i
(m/+m2)
m2
**46. mmh Multiple-Concept Example 7 outlines the general approach
to problems like this one. Two identical balls are traveling toward each
other with velocities of –4.0 and +7.0 m/s, and they experience an elas-
tic head-on collision. Obtain the velocities (magnitude and direction) of
each ball after the collision.
Chapter 3 Solutions
EBK PHYSICS OF EVERYDAY PHENOMENA
Ch. 3 - A small piece of paper is dropped and flutters to...Ch. 3 - The diagram shows the positions at intervals of...Ch. 3 - The diagram shows the positions at intervals of...Ch. 3 - A lead ball and an aluminum ball, each 1 in. in...Ch. 3 - Two identical pieces of paper, one crumpled into a...Ch. 3 - Two identical pieces of paper, one crumpled into a...Ch. 3 - Aristotle stated that heavier objects fall faster...Ch. 3 - A rock is dropped from the top of a diving...Ch. 3 - The graph shows the velocity plotted against time...Ch. 3 - Prob. 10CQ
Ch. 3 - Prob. 11CQCh. 3 - A ball is thrown downward with a large starting...Ch. 3 - A ball thrown straight upward moves initially with...Ch. 3 - A rock is thrown straight upward, reaching a...Ch. 3 - A ball is thrown straight upward and then returns...Ch. 3 - A ball is thrown straight upward and then returns...Ch. 3 - A ball is thrown straight upward. At the very top...Ch. 3 - A ball is thrown straight upward and then returns...Ch. 3 - Prob. 19CQCh. 3 - A ball rolling rapidly along a tabletop rolls off...Ch. 3 - For the two balls in question 20, which, if...Ch. 3 - Is it possible for an object to have a horizontal...Ch. 3 - A ball rolls off a table with a large horizontal...Ch. 3 - A ball rolls off a table with a horizontal...Ch. 3 - An expert marksman aims a high-speed rifle...Ch. 3 - In the diagram, two different trajectories are...Ch. 3 - For either of the trajectories shown in the...Ch. 3 - Assuming that the two trajectories in the diagram...Ch. 3 - A cannonball fired at an angle of 70 to the...Ch. 3 - Will a shot fired from a cannon at a 20 launch...Ch. 3 - The diagram shows a wastebasket placed behind a...Ch. 3 - In the situation pictured in question 31, is the...Ch. 3 - In shooting a free throw in basketball, what is...Ch. 3 - In shooting a basketball from greater than...Ch. 3 - A football quarterback must hit a moving target...Ch. 3 - Prob. 1ECh. 3 - Prob. 2ECh. 3 - Prob. 3ECh. 3 - Prob. 4ECh. 3 - Prob. 5ECh. 3 - Prob. 6ECh. 3 - Prob. 7ECh. 3 - How high above the ground is the ball in exercise...Ch. 3 - At what time does the ball in exercise 7 reach the...Ch. 3 - Prob. 10ECh. 3 - Prob. 11ECh. 3 - Prob. 12ECh. 3 - Prob. 13ECh. 3 - Prob. 14ECh. 3 - Prob. 15ECh. 3 - Prob. 16ECh. 3 - Prob. 1SPCh. 3 - Prob. 2SPCh. 3 - Prob. 3SPCh. 3 - Prob. 4SPCh. 3 - Prob. 5SPCh. 3 - Prob. 6SP
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