What is the drag force on a 1.6 m wide, 1.4 m high car traveling at 11 m/s (≈ 25 mph)? suppose that the density of air is 1.2 kg/m3. what is the drag force on a 1.6 m wide, 1.4 m high car traveling at 33 m/s (≈ 74 mph)? suppose that the density of air is 1.2 kg/m3.

Consider lifting a box of mass m to a height h using two different methods: lifting the box directly or lifting the box using a pulley (as in the previous part). what is wd/wp, the ratio of the work done lifting the box directly to the work done lifting the box with a pulley?