How would you find the velocity (and direction) of the cue ball after the collision?

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter9: Linear Momentum And Collisions
Section: Chapter Questions
Problem 104AP: Two billiard balls are at rest and touching each other on a pool table. The cue ball travels at 3.8...
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How would you find the velocity (and direction) of the cue ball after the collision? (answers are 2.58m/s at 45.1° South of East but I'm not sure on how to get those answers)

Use the following information to answer the next two questions.
A diagram of the collision between a moving cue ball and an initially stationary eight ball
on a billiard table is given below. The collision of the billiard balls can be considered
an isolated system.
Eight ball
= 3.20 m/s
m = 0.160 kg
S
p = 0.512 kg-m/s
40°
Cue ball
V = 4.00 m/s
m = 0.180 kg
p = 0.720 kg-m/s
V = ?
m = 0.180 kg
p = ?
Transcribed Image Text:Use the following information to answer the next two questions. A diagram of the collision between a moving cue ball and an initially stationary eight ball on a billiard table is given below. The collision of the billiard balls can be considered an isolated system. Eight ball = 3.20 m/s m = 0.160 kg S p = 0.512 kg-m/s 40° Cue ball V = 4.00 m/s m = 0.180 kg p = 0.720 kg-m/s V = ? m = 0.180 kg p = ?
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