Drag Force and Terminal Velocity Problems Fishbane Chp 5



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At terminal velocity, a = 0 and the weight is balanced by the drag force:

Fd = mg = kv2, so

k = mg /v2 = 116 kg(9.8 m/s2)/(4.9 m/s)2 = 47 N · s2/m2 = 47 kg/m.

P40. A race car of mass 800 kg has a maximum acceleration from rest of

Assume that the car’s engine is such that the force on the tires is constant and that the



car’s effective cross-sectional area into the air is If the car’s top speed is

observed to be what is its drag coefficient Take the density of air as




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