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101015-opp

# 101015 opp

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Unformatted text preview: 10/15/10 Physics 121 1 10/15/10 Physics 121 2 T T k1 (large) 10/15/10 k2 (small) Physics 121 3 ? T T k1 (large) T T = keff s k2 (small) T T T T = k1 s1 T = k 2 s2 s = s1 + s2 TT T =+ keff k1 k2 10/15/10 11 1 =+ k1 k keff Physics 121 2 4 10/15/10 Physics 121 12 I =F t=m v 10/15/10 Physics 121 13 p = mv F net F net 10/15/10 Physics 121 v =m = ma t ( mv ) = p = t t 14 F net a= m v F net = m t m v = F net t I net =F p =I 10/15/10 Physics 121 net t net 15 mA v A = ( F + FB A )t mB v B = ( F + FA B )t ext A ext B ( mA vA + mB vB = FAext + FBext + FA mA vA + mB vB ) = F ext t ( 10/15/10 Physics 121 B + FB A ) t 16 (mAv A + mB vB ) = 0 i i m Av A + mB vB = m Av Af + mB vBf 10/15/10 Physics 121 17 (object goes backwards) 10/15/10 Physics 121 Do it! 18...
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