3. A railroad car weighing 32 tons and travelling at 5.0 ft/s overtakes another car weighing 24 tons and travelling at 3.0 ft/s in the same direction. If the cars couple together when they meet, find a) the speed of the cars after collision, and b) the loss of kinetic energy during the collision. c) If the collision is, though unlikely, completely elastic, find the speed of the cars after the collision. Answers: a) 4.1 ft/s b) 2332 ft -lbs c) 5.3 ft/s, 3.3 ft/s
3. A railroad car weighing 32 tons and travelling at 5.0 ft/s overtakes another car weighing 24 tons and travelling at 3.0 ft/s in the same direction. If the cars couple together when they meet, find a) the speed of the cars after collision, and b) the loss of kinetic energy during the collision. c) If the collision is, though unlikely, completely elastic, find the speed of the cars after the collision. Answers: a) 4.1 ft/s b) 2332 ft -lbs c) 5.3 ft/s, 3.3 ft/s
Physics for Scientists and Engineers
10th Edition
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter9: Linear Momentum And Collisions
Section: Chapter Questions
Problem 47AP: A 0.500-kg sphere moving with a velocity expressed as (2.00i3.00j+1.00k)m/s strikes a second,...
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