Collisions in One Dimension On a frictionless horizontal air table, puck A (with

Question

Collisions in One Dimension On a frictionless horizontal air table, puck A (with mass 0.254kg) s moving toward puck B (with mass 0.370kg), which is initially at rest. After the collision, puck A has velocity 0.118m/s to the left, and puck B has velocity 0.648m/s to the right. Part A What was the speed vAi of puck A before the collision? vAi 0.826 m/s Submit Hints My Answers Give Up Review Part Correct If you are required to use the answer obtained for a subsequent hint or part, use your unrounded/full precision answer. Significant Figures Feedback: Your answer .825 m/s was either rounded differently or used a different number of significant figures than required for this part. If you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer. Part B Calculate AK, the change in the total kinetic energy of the system that occurs during the collision. AK Submit Hints My Answers Give U Review Part Incorrect Try Again, 3 attempts remaining

Explanation / Answer

Applying momentum balance :

M1V1 = M1V2 + M2v2

0.254* V1 = 0.254*-0.118+0.370*0.648

V1 = 0.826 m/ sec

Change in kinetic energy = 0.5( M1V12

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