## Essential University Physics: Volume 1 (4th Edition)

Published by Pearson

# Chapter 3 - For Thought and Discussion - Page 50: 10

#### Answer

The answer is below.

#### Work Step by Step

D and e are the only two legitimate expressions, for if there is a vector expression on one side of the equation, there must be one on the other side of the equation as well. Therefore, to be valid, any equation with an arrow or hat on one side of the equation must have an arrow or hat on the other side of the equation.

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