A1 275.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 400.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east. Before After

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 14CQ: Describe a system for which momentum is conserved but mechanical energy is not. Now the reverse:...
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A 1 275.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 400.0 kg truck moving in the same direction at 20.000
m/s. The velocity of the car right after the collision is 18.000 m/s to the east.
VCi
Before
After
Transcribed Image Text:A 1 275.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 400.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east. VCi Before After
(b) What is the change in mechanical energy of the car-truck system in the collision?
-9045.75
-9240 J
Transcribed Image Text:(b) What is the change in mechanical energy of the car-truck system in the collision? -9045.75 -9240 J
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