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I need help figuring out the problem below. If an airplane is moving at velocity v , the drag D (in N ) on the

I need help figuring out the problem below.

If an airplane is moving at velocityv, the dragD (inN) on the plane isD = av + b/v2, herea = 5.20 * 10-3 andb = 3.06 10. Find the value(s) ofv(in km/h), for which the drag is the least. Round the answer to one decimal place. Both coefficients,aandb, already account for the unit conversion (from m/s to km/h).

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