A 2 kg object moving at 3 m/s collides with a 4 kg object that is stationary. If the collision is perfectly inelastic, what is the speed of the 2 kg object after the collision? and how much is KE lost? speed = −0.5 m/s and KE lost = 9J speed = −1 m/s and KE lost = 3J No answer speed = 1 m/s and KE lost = 6J speed = 1.5 m/s and KE lost = 12J

College Physics
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Chapter6: Momentum, Impulse, And Collisions
Section: Chapter Questions
Problem 63AP: A 2.0-g particle moving at 8.0 m/s makes a perfectly elastic head-on collision with a resting 1.0-g...
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  1. A 2 kg object moving at 3 m/s collides with a 4 kg object that is stationary. If the collision is perfectly inelastic, what is the speed of the 2 kg object after the collision? and how much is KE lost?

     
    1. speed = −0.5 m/s and KE lost = 9J

       
    2. speed = −1 m/s and KE lost = 3J

       
    3. No answer

       
    4. speed = 1 m/s and KE lost = 6J

       
    5.  speed = 1.5 m/s and KE lost = 12J

       
       
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