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I have a mass of 85kg and a terminal velocity of 46.7m/s. I think I correctly calculated the coefficient of air resistance(b) as 17.84 because I know that the Resistance force at terminal velocity is 833.13 = b($v_t$). I need to figure the acceleration of the object when it is traveling at 30m/s and what the drag force would be at that point as well. R=bv doesn't seem to work at that point, so my b must be off which doesn't really make sense to me.

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Hi Michael, welcome to Physics Stack Exchange! This is not a homework help site, but rather a Q&A site for general conceptual questions about physics; the way you've written your question, it's really specific to your particular problem. If the problem you're having with your question is related to not understanding some concept of physics, perhaps it can be edited to make it more appropriate here, but we'd need to know more about the trouble you're having than just that you're not getting the right answer. – David Zaslavsky♦ Sep 30 '11 at 0:47

closed as too localized by David Zaslavsky♦ Sep 30 '11 at 0:41

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