A 4kg block, initially moving due east at 3 m/s, is acted upon by an impulse having magnitude 8Ns and direction due west. Is the final velocity of the block 2m/s west? This is how I came to that answer:

Question

v = impluse/mass so 8/4 = 2.

Although this is the change in velocity does it act as the final velocity?

Answer 1

Finalmomentum=initialmomentum+impulse
mVf=12E-8NsE=4E
vf=1m/s E

Answer 2

Thanks for the help!!