An empty fuel unit is ejected from a spacecraft in deep space. There is no air or other gases here, and effectively no gravity. 1.) Describe how the fuel unit will move after being ejected.
2.) Explain why in terms of the first law of motion
(Please make it a paragraph.)

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt