Last Activity: 14 Years ago
m1u1=m1v1 + m2v2 (from conservation of momentam)
1*4 = 2*v2 (v1=0 ..given)
v2=2m/s
(kE)i =m1(u1)^2 /2
=8joule
(kE)f=m2(v2)^2 /2
=4j
so kinetic energy transfered is 50%
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Last Activity: 2 Years ago