Two cars both with a mass of 500 kg are traveling down a road the first car has a velocity of 65 m/s east and the second car has a velocity of 85 m/s west. • calculate the momentum of both cars showing the appropriate equation. • which car has the larger momentum? explain how you know.

Independent variable is something that is changed in a experiment. 

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.