By what factor does the drag force on a car increase as its velocity increases from 65.0 km/h to 110 km/h?
The terminal velocity of a 48.7-kg-mass skydiver is 55.5 m/s. Assuming that drag force can be approximated by , find .
A skydiver with a mass of 80.0 kg falls through air that has a uniform density of 1.23 kg/m3. The skydiver has a surface are of 0.140 m2 and a drag coefficient of 0.690. What is the skydiver’s terminal velocity?
A small diamond of mass 10.0 g drops from a swimmer’s earring and falls through the water, reaching a terminal velocity of 2.0 m/s.
Assuming the frictional force on the diamond obeys , what is ?
How far does the diamond fall before it reaches 90 percent of its terminal speed?
Two skydivers simultaneously jump from an airplane that is at an altitude of m. Both skydivers have a drag coefficient of 1.00 and their frontal areas are both 0.566 m2. The density of the air through which the skydivers fall is uniformly equal to 1.225 kg/m3. At an altitude of m, the skydivers open their parachutes. The time taken for the skydivers to achieve their terminal velocities is assumed to be negligible compared to their total fall time.
One of the skydivers has a mass of 81.4 kg. How much time will pass between him leaving the airplane and opening his parachute?
The other skydiver has a mass of 68.6 kg. How much time will pass between her leaving the airplane and opening her parachute?