Answers

2015-09-01T22:10:46+05:30
If there is no external force is acting on the system of particles the momentum of a system particles remains conserved. Eg. Recoil of gun, Rocket Propulsion etc.
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2015-09-02T15:56:50+05:30
 law momentum mean that the force required to stop a moving body which is directly proportional to its mass
momentum of a body is product of mass and velocity .
P =MxV
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