Question

The dimensions of impulse are equal to that of

• A. pressure
• B. linear momentum
• C. force
• D. angular momentum

Answer 1

Answer: (B)

linear momentum

Answer 2

Impulse = Force $\times$ Time.
Therefore dimensional formula of impulse
= Dimensional formula of force $\times$ Dimensional formula of time $= [MLT^{-2}] [T]$
$= [MLT^{-1}]$ and dimensional formula of linear momentum
$[p] = MLT^{-1}$.