Posted by **Sam** on Wednesday, July 14, 2010 at 3:57pm.

Calculate the ratio of the drag force on a passenger jet flying with a speed of 850 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at three-fifths the speed and half the altitude of the jet. At 10 km the density of air is 0.38 kg/m3 and at 5.0 km it is 0.67 kg/m3. Assume that the airplanes have the same effective cross-sectional area and the same drag coefficient C.

(drag on jet / drag on transport) =

- physics -
**bobpursley**, Wednesday, July 14, 2010 at 4:47pm
Surely you have an equation for drag force as a function of density, C, and speed.

- physics -
**Sam**, Wednesday, July 14, 2010 at 4:54pm
I have D=.5CpAv^2, do i just ignore C and A?? not quite sure what to do...

- physics -
**Sam**, Wednesday, July 14, 2010 at 4:59pm
Okay i figured it out. thanks for your assistance I wasnt looking in the right place

## Answer this Question

## Related Questions

- Physics - Calculate the ratio of the drag force on a jet flying at 1049 km/h at ...
- Physics/Math - Calculate the ratio of the drag force on a passenger jet flying ...
- Re: Physics/Math - Calculate the ratio of the drag force on a passenger jet ...
- physics - An airplane is flying horizontally with a speed of 1000 km/hr (278 m/s...
- Physics - A sky diver of mass 80.0 ks jumps from a slow-moving aircraft and ...
- physics - an air craft of mass 5110 kg flying in level flight at speed of 398 ...
- physics - even if drag force i.e air resistance is greater in magnitude as ...
- physics - A skydiver of mass 81.5 kg jumps from a slow-moving aircraft and ...
- Physics - Find the jet fuel mileage (mpg) of a Boeing 787 Dreamliner if: C=0.024...
- Physics - Calculate the force required to pull a copper ball of radius 2.00 cm ...