Answers

2015-10-29T08:41:06+05:30
the law of conservation of momentum states that when two or more bodies collides there initial momentum is always equal to the final momentum unless an external force acts on them, expression:- M1+U1+M2+U2 = M1+V1+M2+V2
         i hope that this will help u.............................^_^
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Formula is wrong..Edit it..
oho + likh diya mene multiply hoga
haa
how will i edit
Dont know..Sometimes edit option is not there
2015-10-29T16:05:14+05:30
The law of conservation of momentum states that the total momentum of the system before collision is equal to the total momentum of the system after collision.It means that the momentum is conserved. 
The formula is 
 m_{1} u_{1} +  m_{2} u_{2} =  m_{1} v_{1} + m_{2} v_{2}
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