Solving the Mystery: Calculating Terminal Velocity

[Zmuffinz]

Homework Statement

Marks: 1 In a recent mystery, the hero saves himself by spreading out a windshield tarpaulin to reduce his terminal velocity. A skydiver of 75 kg mass has a terminal velocity of 60 m/s. If the hero has the same 75 kg mass, the same density as the sky diver, and a drag coefficient twice as large with the tarp, by what factor is his effective area greater than the 0.70 m2 area of the skydiver?

Homework Equations

Drag force= 1/2DPairAV^2

The Attempt at a Solution

 

[Hootenanny]

Homework Statement

Marks: 1 In a recent mystery, the hero saves himself by spreading out a windshield tarpaulin to reduce his terminal velocity. A skydiver of 75 kg mass has a terminal velocity of 60 m/s. If the hero has the same 75 kg mass, the same density as the sky diver, and a drag coefficient twice as large with the tarp, by what factor is his effective area greater than the 0.70 m2 area of the skydiver?

Homework Equations

Drag force= 1/2DPairAV^2

The Attempt at a Solution

You seem to have forgotten to complete section three.

 

[Zmuffinz]

yea i didnt know what to do for the question, i can't get the density of air or drag coeffient so i can't work anything out by rearranging the equation for A

 

[Hootenanny]

yea i didnt know what to do for the question, i can't get the density of air or drag coeffient so i can't work anything out by rearranging the equation for A

HINT: What do you know about the drag force in both cases?