Multiplication and division skills are useful when solving speed, distance and time problems. It may be useful to review how to calculate speed, distance and time.

Now that I have the angular velocity of the planet, I can just calculate its position in each time step as: Really, it doesn't matter what values you use for G and M.

[td0g]’s design makes use of two light gates spaced some distance apart, and the time that an object takes to travel between the two is measured and used to calculate velocity.