Posted by **Me** on Thursday, July 8, 2010 at 7:17pm.

A car accelerates at a constant rate from zero to 36.8 m/s in 10 seconds and then slows to 13.9 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds?

What was the acceleration during the first 10 seconds in the previous problem?