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  4. The dimensional formula for impulse is same as the dimensional formula for

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Q. The dimensional formula for impulse is same as the dimensional formula for

Physical World, Units and Measurements

Solution:

Momentum $=mv=\left[MLT^{-1}\right]$
$\left[MLT^{-2}\right]\times\left[T\right]=\left[MLT^{-1}\right]$
Impulse = Force $\times$ Time
$=\left[MLT^{-2}\right]\times\left[T\right]=\left[MLT^{-1}\right]$