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courtneyxxx 11-10-2012
courtneyxxx - Air University (AL)
Kinetic energy is always positive. Mass and squared speed are both positive. A moving object can always do positive work in striking another object and causing it to move along the same direction of motion.
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hollyb 11-10-2012
hollyb - Stanford University (CA)
as bulk is always constructive as well as sq . regarding pace can also be often good and so Okay.E can't become absolutely no
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