Tips and Tricks on Motion Of System Of Particles And Rigid Body


 


1
Linear momentum is conserved whenever external force is zero or in a two body system net external force is zero.



2
Elastic collision occurs only in atomic or subatomic particles. In real world, collision is inelastic .Only collision between two ping-pong balls may be considered elastic. During elastic collision kinetic energy and linear momentum are conserved.



   3


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