Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 9 - Exercises and Problems: 46

Answer

43.87 km/h

Work Step by Step

We know that the final momentum is equal to the initial momentum. Thus, using the fact that $p=mv$, we find: $$(1200)(50)+(4400)(35)+(1500)(65) = (1200+4400+1500)v $$ $$ v = 43.87 \ km/h$$
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