Question

the expression for external force in tems of momentum ( formula)​

Answer 1

Answer:

impulse

Explanation:

I=F×t

change of momentum is impulse

and rate of change of mometum is force

Answer 2

Answer:

We know, Force = Change in Momentum/Time taken

Hence, F = M(v-u)/t ; where v is the final velocity, u is the intial velocity and t is the time taken for that change.

You could also write in this form:

 $F = \frac{Mv - Mu}{t} \\= \frac{p_{f}-p_{i} }{t}$

Where p(f) is the final momentum and p(i) is the initial momentum.

It takes time and effort to explain, so if my answer helped you, please mark the Brainliest button :)