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m=1000kg
m'=2000kg
u=12m/sec
u'=8m/sec
v=9m/sec
v'=?
using law of conservation of momentum
m.u+m'.u'=m.v+m'.v'
12000+16000=9000+2000v'
19000=2000v'
9.5m/sec=v'
m'=2000kg
u=12m/sec
u'=8m/sec
v=9m/sec
v'=?
using law of conservation of momentum
m.u+m'.u'=m.v+m'.v'
12000+16000=9000+2000v'
19000=2000v'
9.5m/sec=v'
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