I have this question on my math homework I can't seem to find the correct way to do the last part of it. The question reads "A particle moves in a straight line so that after t minutes, its distance is s(t)=2(t^3) + 3t +1 feet from the origin.
a: Find the average velocity over the interval [1,5]
b: Find the instantaneous velocity at t=4
c: Find the total distance traveled (nearest tenth)
d: Find the displacement (nearest tenth)"
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a: I think I got this part, do I use the msec=... formula?
b: Do I just take the derivative of the s(t) formula to make it v(t) and solve for v(4)?
c: I got an imaginary number for this part, so I know something's not right. I've looked over the worksheet, this question, and my work, and I did it right.
d: Where do I find the displacement from? I had a formula sheet, but I don't know where it is now.
Thanks again to all who help!
2006-06-08
04:53:29
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1 answers
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asked by
mlacy2006
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