>>>Correct me if I'm wrong here, but the Gravitational formula is G*(m1*m2)/r^2. In this case, no matter how I apply the acceleration due to gravity I still need to use the pythagorean (which needs sqrt()) to find the distance (the r in the formula).
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>Thats sort of what I thought.
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>Has any attempted the challenge yet?

I ran it, but haven't had a chance to (try to) enhance it yet.