Question

Which physical quantity has the dimensional formula mlt -1?

Answer 1

Taking the given dimensional formula [M^1 L^1 T^-1] in the corresponding SI units, we get (kg×m)/s, which is clearly the SI unit for Momentum.

Answer 2

MLT^-1 is the Dimentional Formula for Momentum

Momentum = Mass X Velocity

Momentum = [M] [LT^-1]

So. Momentum = MLT^-1

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