STEM Lessons for College Students

Given two vectors A S _ 4.00dn _ 7.00en and B S _ 5.00dn _ 2.00en (a) find the magnitude of each vector; (b) use unit vectors to write an expression for the vector difference A S _ B S ; and (c) find the magnitude and direction of the vector difference A S _ B S . (d) In a vector diagram show A S B S and A S _ B S and show that your diagram agrees qualitatively with your answer to part (c). 1.39 .. (a) Write each vector in Fig. E1.39 in terms of the unit vectors dn and en. (b) Use unit vectors to express vector C S where C S _ 3.00 A S _ 4.00 B S . (c) Find the magnitude and direction of C S .

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