ch09-p063 - 63. (a) Let m1 be the mass of the body that is...

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We solve for m 2 to obtain m vv m if fi 2 11 1 = + . We combine this with 4 = / to obtain () 21 3 5 3 2.0 kg 5 1.2 kg mm == = . (b) The speed of the center of mass is ( ) 2 2 com 12 2.0 kg 4.0 m/s 2.5 m s 2.0 kg 1.2 kg ii mv v + = ++ . 63. (a) Let m 1 be the mass of the body that is originally moving, v 1 i be its velocity before the collision, and
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