on a frictionless horizontal air table, puck A (with mass 0.248 kg) is moving to
ID: 1608171 • Letter: O
Question
on a frictionless horizontal air table, puck A (with mass 0.248 kg) is moving towards puck B (with mass 0.372), which is initially at rest. After collision, puck A has velocity 0.125 m/s to the left, and puck B has velocity 0.653 m/s to the right.Part B Calculate the change in the total kinetic energy of the system that occur during the collision. -y O en session masteringphysicscom/myct/itemview?assignmentproblemID 77541902 hysics 22000 College Physics 1 rk and energy Collisions in One Dimension ollisions in One Dimension Part A On a frictionless horizontal air table, puck A (with mass 0.248 kg) is moving toward puck B (with mass 0.372 kg), which is initially at rest After the collision, puck A has velocity 0.125 m/s to the left and puck Bhas velocity 0653 m/s to the right What was the speed vAI of puck A before the collision? 0.855 m/s I Submit Hints My Answers Give Up Review Pa Correct If you are required to use the answer obtained for a subsequent hint or part use your unrou Significant Figures Feedback: Your answer .8545 m/s was either rounded difierently or u need this result for any later calculation in this item, keep all the digits and round asthe final Part B Calculate AK the change in the total kinotic energy of the system that occurs during the collisio AK Submit Hints My Answers Give up Review Part
Explanation / Answer
B) delta_K = Kf - Ki
= (1/2)*mA*vAf^2 + (1/2)*mB*vBf^2 - ( (1/2)*mA*vAi^2 + (1/2)*mB*vBi^2 )
= (1/2)*0.248*0.125^2 + (1/2)*0.372*0.653^2 - ((1/2)*0.248*0.855^2 + (1/2)*0.372*0^2)
= -9.40*10^-3 J
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