**A.**

A_{x} = x_{head} - x_{tail} = 8 - 3 = 5 m

Tactics Box: Determining the components of a vector

1. The absolute value |A_{x}| of the x component A_{x} is the magnitude of the component vector .

2. The sign of A_{x} is positive if points in the positive x direction; it is negative if points in the negative x direction.

3. The y component is determined similarly.

A. What is the magnitude of the component vector *A*_{x} shown in the figure?

Express your answer in meters to one significant figure.

B. What is the sign of the y-component A_{y} of vector A shown in the figure?

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