OT: Looking for a good physics site

[Jack Simth]

narf poit chez BOOM said:
Why is it equal to 0, though?

Brain fried; can't answer post fully at the moment.

That aspect, though...

It's 0 because it's a manipulation of two separate position functions that I want to be in the same place at the same time (definition of interception). They are both position functions, and I want them equal, so I assigned them that way, and tossed the same t in there: p1(t) = p2(t). I then expanded the functions to their components, and merged them onto one side (leaving the other side as 0).

[narf poit chez BOOM]

Ok, thanks. That makes sense.

My sympathies on the fried brain.