In the drag equation FD =1/2ρ x v^2 x CD x A(adsbygoogle = window.adsbygoogle || []).push({});

FD is the force of drag, which is by definition the force component in the direction of the flow velocity,

ρ is the mass density of the fluid,

u is the velocity of the object

A is the reference area, and

CD is the drag coefficient

How would you find A of a sphere 1.65cm in diameter

And what would mass density be if we are measuring air resistance and not water drag? The air temperature and presure is at SATP (1 atm, 25 degrees celsius) if that helps?

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# Homework Help: Drag Equation

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