A traveler flies from Spokane to Atlanta by way of Los Angeles. Los Angeles is approximately 1600 km due south of Spokane, and Atlanta is approximately 3200 km due east of Los Angeles (Fig. 1-32). Find the traveler’s total displacement.

A traveler flies from Spokane to Atlanta by way of Los Angeles. Los Angeles is approximately 1600 km due south of Spokane, and Atlanta is approximately 3200 km due east of Los Angeles (Fig. 1-32). Find the traveler’s total displacement.
18 A traveler first drives 20.0 km east, then 30.0 km southeast, and finally 10.0 km south. Find the trav- eler’s total displacement.
Vector Algebra
Graphical vector addition
19 Four forces each have a magnitude of 50 lb. Their re- spective directions are north, south, east, and west. Find the resultant force.
20 A 40 lb force acts to the right, while a 100 lb force acts at an angle of 458 above the first. Construct the vector sum of the two forces graphically, using a convenient scale.
21 Electric fields are vector quantities whose magnitudes are measured in units of volts/meter (V/m). Find the resultant electric field when there are two fields, E1 and E2, where E1 is directed vertically upward and has magnitude 100 V/m and E2 is directed 458 to the left of E1 and has magnitude 150 V/m.