Applying a specific impulse along a vector?

Oct 14, 2008 at 12:01 PM
I'm quite rusty on vector math, so apologies if this is really simple. What I'd like to do, is take a vector, say, between an object and another object (explosives, let's say), and then apply an impulse along that vector, but of a specific quantity unrelated to the vector. With as rusty as my math is, I'm not entirely sure how to get said vector, or what Farseer method I'd use to give the object a good punt along it. (Vector.Subtract(), maybe?) Thanks in advance.