Tag: physics

$Js$ $\rightarrow  M^{1} L^{2} T^{-1}$
Energy $= M^{1} L^{2} T^{-2}$
Angular Momentum $= mvr = M^{1} L^{2} T^{-1}$
Momentum $= mv = M^{1} L^{1} T^{-1}$
Power $= f\times v = M^{1} L^{2} T^{-3}$
Hence, option B is correct.

Joule is not the unit of force, it is the SI unit of work.

Mass, length and time are the fundamental physical quantities whereas density is the derived physical quantity.

The effect of an impulse force on the body is measured only in terms of impulse. If a moving object is stopped by an impact, the change in momentum of the object occurs. This change in momentum is called the impulse.

$W \ s$, $kWh$ and $erg$ are the unit of energy but $J \ s$ is not the unit of energy. So, energy cannot be measured in $J \ s$

Momentum $=$ mass X velocity  $=kg\dfrac { meter }{ { sec } } $