Force on Space Ship: Mag to Nearest MN

[Felicity Wang]

Homework Statement

IF D = 1954 meters and d = -92 meters, to the nearest MN what is the magnitude of the force on the space ship

Homework Equations

F=(Gmass) / r^2
F=(G x mass asteroid) / (D/2)^2

ΣFx= F asteroidright - F asteroidleft = ma

The Attempt at a Solution

F asteroid right = F asteroid right = 0N

However I don't think this right because the ship is moving towards the asteroid on the right

 

[Orodruin]

You are ignoring the fact that the ship is closer to one of the asteroids than to the other? The gravitational force depends only on position and not on velocity.