SOLUTION: Wind resistance or atmospheric drag tend to slow down moving objects. Atmospheric drag varies jointly as an objects surface area A and velocity v. If a car traveling at speed of 60

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Question 1113218: Wind resistance or atmospheric drag tend to slow down moving objects. Atmospheric drag varies jointly as an objects surface area A and velocity v. If a car traveling at speed of 60 mph with a surface area of 34 ft^2experiences a drag of 244.8 N ( Newton's), how fast must a car with 48ft^2of surface area travel in order to experience a drag force of 368.64 N ?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Wind resistance or atmospheric drag tend to slow down moving objects.
Atmospheric drag varies jointly as an objects surface area A and velocity v.
If a car traveling at speed of 60 mph with a surface area of 34 ft^2 experiences a drag of 244.8 N ( Newton's),
:
I always thought the air resistance varied with the square of velocity, however we will just do this with the information given
find k
A*v*k = drag
34*60*k = 244.8
2040k = 244.8
k = 244.8/2040
k = .12
:
how fast must a car with 48ft^2 of surface area travel in order to experience a drag force of 368.64 N ?
.12*48*v = 368.64
5.76v = 368.64
v = 368.64/5.76
v = 64 mph