A railroad car of mass 21800 kg moving eastwards with a speed of 3.61 m/s collides and couples with another rail car of mass 41800 kg, moving in the same direction with a speed of 1.4 m/s. What is the speed of the two coupled cars after the collision? (make east positive)

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter6: Momentum, Impulse, And Collisions
Section: Chapter Questions
Problem 53P: A billiard ball moving at 5.00 m/s strikes a stationary ball of the same mass. Alter the collision,...
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I need help with number 5 please and round all numbers to three significant digits

4.
A 0.317-kg ball traveling at 7.42 m/s west collides
head on with a 1.02-kg ball moving in the opposite
direction at a velocity of 10.2 m/s. The 0.317-kg ball
rebounds at 15.6 m/s after the collision. Find the
velocity of the second ball. (use west as the positive
direction)
05.
A railroad car of mass 21800 kg moving eastwards
with a speed of 3.61 m/s collides and couples with
another rail car of mass 41800 kg, moving in the
same direction with a speed of 1.4 m/s. What is the
speed of the two coupled cars after the collision?
(make east positive)
Transcribed Image Text:4. A 0.317-kg ball traveling at 7.42 m/s west collides head on with a 1.02-kg ball moving in the opposite direction at a velocity of 10.2 m/s. The 0.317-kg ball rebounds at 15.6 m/s after the collision. Find the velocity of the second ball. (use west as the positive direction) 05. A railroad car of mass 21800 kg moving eastwards with a speed of 3.61 m/s collides and couples with another rail car of mass 41800 kg, moving in the same direction with a speed of 1.4 m/s. What is the speed of the two coupled cars after the collision? (make east positive)
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