Posted by **Rob** on Wednesday, February 24, 2010 at 7:00pm.

A particle moves along a straight line with equation of motion s = f(t), where s is measured in meters and t in seconds. Find the velocity and speed when t = 9.

f(t) = t ^-1 - t

- calculus -
**rob**, Thursday, February 25, 2010 at 4:51pm
plzzz help!!!

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