# Can someone help solve the second question and explain it? < Chapter 8 Exercise 8.21 く)...

###### Question:

Can someone help solve the second question and explain it?

< Chapter 8 Exercise 8.21 く) 5of17 Part A On a kg ) is moving toward puck B (with mass 0.355 kg ), that is initially at rest. After the collision, puck A has a velocity of 0.121 m/s to the left, and puck B has velocity 0.660 m/s to the right. horizontal air table, puck A (with mass 0.245 What was the speed of puck A before the collision? = 0.835 m/s Correct ▼ Part B Calculate the change in the total kinetic eergy of the system that occurs during the collision Submit Incorrect; Try Again: 3 attempts remaining Provide Feedbachk Ne

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