Use a Pivot Table in Excel 2007 for Data Organization. Pivot tables are an Excel feature that you should learn how to use. Instead of analyzing. rows upon rows of records, a pivot table can aggregate your data and show a new. perspective and few clicks. You can also move columns to rows or vice versa. The.
The vector sum of the external forces F on an object is equal to the mass m of that object multiplied by the acceleration vector a of the object: F = ma. Third law: When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
The second law (equal areas in equal time) turns out to be a consequence of Conservation of Angular Momentum. The third law can be derived from the expressions for centripetal acceleration (v^2/r) and gravitational acceleration (GM/r^2). For circular orbits, you just set these two equal. v^2/r = GM/r^2 The speed v is equal to the circumference 2*pi*r divided by the time to travel that circumference, T, the period.