Two skydivers jump out of a plane. Both skydivers jump when the plane is traveling at 200 m/s and is 3800 meters above the ground. One skydiver is 70 kg, the other is 60 kg. Scientists want to observe if the mass of a skydiver affects the motion of
the skydiver as he or she travels through the air.
Which would be the independent variable?

answer; ///i do believe that the correct answer is (b); ///particle composed of two or more atoms bonded together;

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.