60. The vector can be written as ˆ (2.5 m)j d = G , where we have taken ˆ j to be the unit vector pointing north. (a) The magnitude of the vector 4.0 ad = G G is (4.0)(2.5 m) = 10 m. (b) The direction of the vector GG ad = 4.0 is the same as the direction of G d
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