question_answer 35)

                  Figure shows die orientation of two vectors \[u\] and v in the XY plane.                 If \[u=\,a\hat{i}\,+\,b\hat{j}\] and  \[v=\,p\hat{i}+\,q\hat{j}\]                 which of the following is correct? (a) a and p are positive while b and q are negative.                 (b) a, p and b are positive while q is negative.                 (c) a, q and b are positive while p is negative.                 (d) a, b, p and q are all positive.

Answer:

                  (b) Resolve \[\hat{u}\] and \[\hat{v}\] into components.