Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 6 - Think and Solve: 32

Answer

Use the conservation of momentum principle. The momentum before the collision equals the momentum after the collision. $$(40 kg)(0) + (15 kg)(3.0 m/s) = (40.0 kg + 15 kg) v$$ $$v = 0.8 m/s$$
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