Question

How to prove that Ns and kgms^-1 are equivalent?

Answer 1

We know that kg×m/s is an example of mv meaning mass into velocity

m.v = kg m/s ...eqn1

And N - s represent N = kg m/s² since F = ma

so N-s

= kg m/s²/s

N = kg m/s

So N - s also represents m.v (mass.velocity)

Therefore we can through eqn 1 and 2

N-s = kgms-¹