Aspace explorer is moving through space far from any planet or star. he notices a large rock, taken as a specimen from an alien planet, floating around the cabin of the ship. should he push it gently, or should he kick it toward the storage compartment? explain.

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.