ch03-p008 - 8. We label the displacement vectors A , B and...

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8. We label the displacement vectors G A , G B and G C (and denote the result of their vector sum as G r ). We choose east as the ˆ i direction (+ x direction) and north as the ˆ j direction (+ y direction). We note that the angle between G C and the x axis is 60°. Thus, () () ˆ (50 km)i ˆ (30 km) j ˆˆ (25 km) cos 60 i + (25 km)sin 60 j A B C = = ° G G G (a) The total displacement of the car from its initial position is represented by (62.5 km)i
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