What variables have the most effect on the strength of the gravitational attraction between two massive objects? Help

Gunpowder residue is most likely to show up where on a shooters hands

The slope of a velocity time graph over any interval of time gives the during that interval

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)