Which of the following equations are dimensionally correct? (a) vf=vi+a x (b) y=(2 m ) cos (k x), where k=2 m ^-1

 7. Which of the following equations are dimensionally correct?

(a) $v_{f}=v_{i}+a x$

(b) $y=(2 m ) \cos (k x)$, where $k=2 m ^{-1}$