Posted by Reese on Sunday, September 12, 2010 at 2:40pm.
An athlete starts at point A and runs at a constant speed of 5.40 around a round track 150m in diameter.
Find the x component of this runner's average acceleration between points A and B.
I don't even know how to start.
Please help!

Physics  bobpursley, Sunday, September 12, 2010 at 3:07pm
Where is points A and B?
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