Physics Laboratory Manual
Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 14, Problem 6PLA
To determine

The total kinetic energy after the collision and what happened to the lost energy.

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In a head-on collision, two isolated particles m, = 7 kg and m2 = 5 kg collide with initial speed Vii = 4 m/s and v2i = 6 m/s as shown in Figure 1. After collision m, rebounds with speed vif 3 т/s. m2 m1 m2 üzi üzf =? Before Collision After Collision Figure 1 a) Calculate the final velocity (speed and direction) of m2. Show your work. b) Is this collision elastic or inelastic? Explain your answer and support it with calculations.
Before a collision, Cart A has 50 kg m/s of momentum and Cart B has -10 kg m/s momentum.  Following the collision, Cart A has momentum of 30 kg m/s, Cart B is moving but you don’t know its momentum yet.   What is the total momentum of the 2 car system before the explosion? Show your work.     Assuming this system is isolated, what is the total momentum of the 2 car system after the explosion?     What is the momentum of cart B after the explosion?     If Cart B has a mass of 5 kg, how fast is cart B moving?
A 5 kg sphere moves at 5m/s in the +x direction and hits a 2kg stationary ball at the origin. After the spheres collide, the lighter ball has a final velocity of 3.6m/s directed 49 degrees from the x axis as shown in the image below. 1. Figure out the speed (v') and direction (theta) of the heavier ball after the collision 2. Is the collision elastic or inelastic? Explain your answer in 3 sentences or less. 5 kg 5 m/s 2 kg To 49° 3.6 m/s I
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