## Physics: Principles with Applications (7th Edition)

Published by Pearson

# Chapter 7 - Linear Momentum - Problems: 9

2500 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 nucleus was originally moving. $$(222 u)(320 m/s) = (218 u)(280 m/s) + (4.0 u)v$$ Solve for velocity v = 2500 m/s, rounded to 2 significant figures.

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