Chapter 3, Problem 60GP

CE Predict/Explain Consider the vectors $\stackrel{\to }{\text{A}}=(1.2\text{m})\hat{\text{x}}$ and $\stackrel{\to }{\text{B}}=(-3.4\text{m})\hat{\text{x}}$. (a) Is the magnitude of vector $\stackrel{\to }{\text{A}}$ greater than, less than, or equal to the magnitude of vector $\stackrel{\to }{\text{B}}$? (b) Choose the best explanation from among the following:

1. I.                    The number 3 4 is greater than the number 1.2.
2. II.                 The component of $\stackrel{\to }{\text{B}}$ is negative.
3. III.              The vector $\stackrel{\to }{\text{A}}$ points in the positive x direction.