Aproperty of gasoline is that it will in air.

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?

How does the motion of an airplane compare to the motion of a rocket ?

If you drive 12 miles north and 35 miles east, what is the direct distance between you and your starting point?