Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 7 - Linear Momentum - Problems: 7

Answer

v = -0.898 m/s.

Work Step by Step

The momentum in the horizontal direction will be conserved. Let the positive direction be the direction in which the package is thrown. The initial momentum is zero. $$0 = (24.0 + 35.0 kg)(v) + (5.30 kg)(10.0 m/s)$$ Solve for v = -0.898 m/s. The negative sign means the boat and child are moving in the opposite direction as the package.
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