Question

It starts saying that impulse is related to velocity in a certain way. What is that relationship?

I just said impulse = force x time
and momentum = mass x velocity

So would that be a correct answer to what they're wanting?

Also, it says there is a relationship to be found between pairs of forces in certain situations. What is that relationship?

I'm not sure how to answer this one.

Thank you in advance.

Answer 1

Impulse is mass times change in velocity
because
Force * time = change of momentum = change of m v = m * change of v if m is constant

Answer 2

Pairs of forces probably refers to Newton's third law, for every force there is an equal and opposite force.