Distinguish between inetial and weight

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

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.