Q. The dimensions of kinetic energy are
A) $\left\lbrack M^{2}L^{2}T \right\rbrack$
B) $\left\lbrack {ML}^{2}T \right\rbrack$
C) $\left\lbrack {ML}^{2}T^{- 2} \right\rbrack$
D) $\left\lbrack {ML}^{2}T^{- 1} \right\rbrack$
Explanation
$KE = \frac{1}{2}mv^{2}$ $\therefore\lbrack KE\rbrack = \lbrack M\rbrack\left\lbrack LT^{- 1} \right\rbrack^{2} = \left\lbrack ML^{2}T^{- 2} \right\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.