Figure 2 (EP). 13 shows the orientatione of two vectors ` vec u` and `vec v` in the (XY) plane.
If ` vec u = a hat I + b hat j` and ` vec v = p hat + q hat j` which of the following is correct ?
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Options

A. (a) ` a ` and ` p` are psoitive while `b` and `q` are negative
B. (b) ` a, q` and `b` are positve while `q` is negative
C. (c ) ` a, b,q` and `b` positve whicl `p` is negative
D. (d) ` a,b, p` and `q` are all positive

Answer

B

Explanation

As per fig, in ` vec u = a hat i+ b hat j0. both (a) and (b) are positive. In ` vec v = p hat i+ q hat j`. P` is positive and (q) is negative. Thus , ` a, v` and (p) are positive and 9q) is negative.