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  4. The dimensions of impulse are equal to that of

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Q. The dimensions of impulse are equal to that of

AIPMTAIPMT 1996Physical World, Units and Measurements

Solution:

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