Homework Help: physics

Posted by Anonymous on Friday, September 25, 2009 at 6:15pm.

The average speed of a nitrogen molecule in air is about 686 m/s, and its mass is 4.85×10-26 kg. If it takes 3.78×10-13 s for a nitrogen molecule to hit a wall and rebound with the same speed but moving in the opposite direction, what is the magnitude of the average acceleration of the molecule during this time interval?

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