It is correct to say that impulse is equal toA) momentum.B) the change in momentum.C) the force multiplied by the distance the force acts.D) all of these.E) none of these.

Respuesta :

Answer:

B) the change in momentum.

Explanation:

The impulse is defined as the product between the force applied on an object (F) and the duration of the collision ([tex]\Delta t[/tex]):

[tex]J=F \Delta t[/tex] (1)

We can rewrite the force by using Newton's second law, as the product between mass (m) and acceleration (a):

[tex]F=ma[/tex]

So, (1) becomes

[tex]J=ma \Delta t[/tex]

Now we can also rewrite the acceleration as ratio between the change in velocity and change in time: [tex]a=\frac{\Delta v}{\Delta t}[/tex]. If we substitute into the previous equation, we find

[tex]J=m\frac{\Delta v}{\Delta t}\Delta t=m\Delta v[/tex]

And the quantity [tex]m\Delta v[/tex] is equivalent to the change in momentum, [tex]\Delta p[/tex].