Posted by **E** on Wednesday, October 17, 2012 at 6:10pm.

A certain car can accelerate from rest to the speed v in time T seconds.

(a) If the power output of the car remains constant, how long does it take for the car to accelerate from v to 3v, in terms of T?

(b) How fast is the car moving 9T after starting, in terms of v?

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