problem01_78 - 1.78: (a) Take the beginning of the journey...

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1.78: (a) Take the beginning of the journey as the origin, with north being the y - direction, east the x -direction, and the z -axis vertical. The first displacement is then , ˆ 30 k - the second is j ˆ 15 - , the third is m) 200 km 2 . 0 ( ˆ 200 = i , and the fourth is j ˆ 100 . Adding the four: k j i j i j k ˆ 30 ˆ 85 ˆ 200 ˆ
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