p03_055.pdf

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Chapter 3 - 3.55
55. (a) The magnitude of the vector a =4 . 0 d is (4 . 0)(2 . 5) = 10 m.
(b) The direction of the vector a =4 . 0 d is the same as the direction of d (north).
(c) The magnitude of the vector c =
−
3 . 0 d is (3 . 0)(2 . 5) = 7 . 5m.
(d) The direction of the vector c =
−
3 . 0 d is the opposite of the direction of d . Thus, the direction of c
is south.

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