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January 26, 2015

January 26, 2015

Posted by **Eric** on Saturday, December 8, 2012 at 1:12pm.

- Physics -
**Elena**, Saturday, December 8, 2012 at 6:06pm(a)

mv²/2=W(fr) =F(fr)s=μNs=μmgs

s= mv²/2μmg= v²/2μg

s is the same for the both cars

(b)

s↑ since μ↓

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