Saturday
April 25, 2015

Homework Help: physics

Posted by Becky on Sunday, October 11, 2009 at 3:54pm.

As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 9.90 mi/hs. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 13.5 mi/hs. Each vehicle maintains a constant velocity after reaching its cruising speed.

(a) For how long is the bicycle ahead of the car?

(b) By what maximum distance does the bicycle lead the car?


I ended up with a quadratic equation but the answer was incorrect, but it was so long to solve that I don't know at what point I would go wrong.

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