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Vectors : Addition, Speed and Direction

Find |a|, a + b, a ? b, 2a, and 3a + 4b.
18. a=21?3j. bi+5j
19. a=3?2k, b=i?j+k

31. A woman walks due west on the deck of a ship at 3 mi/h. The ship is moving north at a speed of 22 mi/h. Find the speed and direction of the woman relative to the surface of the water.


Solution Summary

Vector addition is investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.