Firstly, I admit that my math skills are fairly rusty. I also admit that this is a homework problem. It is not to be turned in for a grade however. The problem is to determine the SI units of G in the following equation: F = GMm/r^2 (where F is force (mass * acceleration), M and m are the masses of two objects, and r is a distance) which is, of course, Newton's law of universal gravitation. I would be greatly appreciative if someone could walk through the steps needed to make this determination.