Solve the problem of the freely falling body by introducing a translating coordinate system with an

Solve the problem of the freely falling body by introducing a translating coordinate system with an acceleration . Set up and solve the equations of motion in this accelerated coordinate system and transform the result back to a coordinate system fixed relative to the earth. (Neglect the earth's rotation.) b) In the same accelerated coordinate system, set up the equations of motion for a falling body subject to an air resistance proportional to its velocity (relative to the fixed air).