A 7.8 kg block with a speed of 3.3 m/s collides with a 15.6 kg block that has a speed of 2.2 m/s in the same direction. After the collision, the 15.6 kg block is observed to be traveling in the original direction with a speed of 2.8 m/s. (a) What is the velocity of the 7.8 kg block immediately after the collision? (b) By how much does the total kinetic energy of the system of two blocks change because of the collision? (c) Suppose, instead, that the 15.6 kg block ends up with a speed of 4.4 m/s. What then is the change in the total kinetic energy?
A 7.8 kg block with a speed of 3.3 m/s collides with a 15.6 kg block that has a speed of 2.2 m/s in the same direction. After the collision, the 15.6 kg block is observed to be traveling in the original direction with a speed of 2.8 m/s. (a) What is the velocity of the 7.8 kg block immediately after the collision? (b) By how much does the total kinetic energy of the system of two blocks change because of the collision? (c) Suppose, instead, that the 15.6 kg block ends up with a speed of 4.4 m/s. What then is the change in the total kinetic energy?
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter9: Momentum And Its Conservation
Section: Chapter Questions
Problem 70A
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A 7.8 kg block with a speed of 3.3 m/s collides with a 15.6 kg block that has a speed of 2.2 m/s in the same direction. After the collision, the 15.6 kg block is observed to be traveling in the original direction with a speed of 2.8 m/s. (a) What is the velocity of the 7.8 kg block immediately after the collision? (b) By how much does the total kinetic energy of the system of two blocks change because of the collision? (c) Suppose, instead, that the 15.6 kg block ends up with a speed of 4.4 m/s. What then is the change in the total kinetic energy?
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