Posted by QUICK PLEASE HELP on Thursday, November 29, 2012 at 8:06pm.
1. i would go on conversation of mass wikipedia. Since they give a lot of detail.
2.Velocity is usually the average of moving from one place to another over a period of time. Ex. running 4 miles in 12 minutes = an average 1/3 miles/hour. Acceleration is the rate of change in a distance over a period of time, so you may have run faster down a hill than up a hill, therefore you would have different acceleration rates during those times or distances. Acceleration is referred to as the "1st derivative" of motion.
Hope this helps :)
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