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1. Two children at rest push off from each other in a swimming pool. One with a mass of 50 kg moves east at 1.5 m/s and the other who has a mass of 45 kg moves to the west. What is the second child's velocity?

1. Two children at rest push off from each other in a swimming pool. One with a mass of 50 kg moves east at 1.5 m/s and the other who has a mass of 45 kg moves to the west. What is the second child's velocity?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1. Two children at rest push off from each other in a swimming pool. One with a mass of 50 kg moves east at 1.5 m/s and the other who has a mass of 45 kg moves to the west. What is the second child's velocity? 2. A 1.5-kg ball moving at 2.0 m/s to the right collides head on with a 1.0-kg ball moving at 3.0 m/s to the left. The coefficient of restitution is 0.70. Find the speed and direction of the balls after collision. 3. A 3.0-kg block moving to the right on a frictionless table at 4.0 m/s makes a head-on collision with another 3-kg block moving 5 m/s to the left. Find the final velocity of the blocks, if the collision is (a) perfectly elastic, and (b) perfectly inelastic.
Transcribed Image Text:1. Two children at rest push off from each other in a swimming pool. One with a mass of 50 kg moves east at 1.5 m/s and the other who has a mass of 45 kg moves to the west. What is the second child's velocity? 2. A 1.5-kg ball moving at 2.0 m/s to the right collides head on with a 1.0-kg ball moving at 3.0 m/s to the left. The coefficient of restitution is 0.70. Find the speed and direction of the balls after collision. 3. A 3.0-kg block moving to the right on a frictionless table at 4.0 m/s makes a head-on collision with another 3-kg block moving 5 m/s to the left. Find the final velocity of the blocks, if the collision is (a) perfectly elastic, and (b) perfectly inelastic.
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