First slide

Dimensions of physical quantities

Question

Find the dimensional formula of Momentum.

Easy

A

Dimensionless
B

$[{MLT}^{- 1}]$
C

$[{MLT}^{- 2}]$
D

$[{MLT}^{- 3}]$

Solution

$Momentum, [P] = [mv] [P] = [M] [v] = [M] [L T^{- 1}] = [M L T^{- 1}]$

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