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# Vector algebra: Conceptual problems

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1. Given the vector 25 knots [southeast], describe the opposite vector and label and draw a scale drawing of the vector and its opposite. (5 marks)

2. You are given the following vectors.

a = 5 N [south]
b = 4 N [north]
c = 2 N [west]
d = 4 N [east]

Draw scale diagrams to find:

a. a + 3a (2 marks)
< >
b. c - d (2 marks)
< >
c. b +2c + 2 (2 marks)

##### Solution Summary

Two conceptual problems related to addition and subtraction of vectors solved with diagrams.

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