Answer:
(i) It
is the product of a pure number and a velocity vector, hence the unit of
product is same as that of velocity vector i.e. the product is a velocity of
magnitude 15\[~\text{km}{{\text{h}}^{-\text{1}}}\] towards west.
(ii) It is the product of a scalar (time) and velocity
vector. The unit of this product will be hour x\[~\text{km}{{\text{h}}^{-\text{1}}}\]
= km. Thus the product is a displacement of magnitude 15 km towards east.
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