wind resistance or atmospheric drag tends to slow down moving objects. atmospheric drag varies jointly as an objects surface area A and velocity. If a car traveling at a speed of 50 mph with a surface of 33ft squared experiences a drag of 280.5 newtons, how fast must a car with 47ft squared of surface area travel in order to experience a drag force of 487.39 Newtons.

Solution:

Drag = K*A*V

Si

280.5=K*33*50

K=0.17

So

D=0.17AV

V=D/0.17A= 487.39/(0.17*47)=61

So 61 mph of velocity is needed