Conceptual Physics (12th Edition)

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

Chapter 6 - Think and Explain: 69

Answer

The cart with twice the mass moves at half the speed of the less massive cart.

Work Step by Step

The initial momentum of the system is zero. Afterward, the carts have equal and opposite momentum vectors. $$(2m) (\frac{v}{2}) = mv$$ We see that the cart with twice the mass moves at half the speed of the less massive cart.
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