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If a body of mass m has a velocity v, then its momentum is


The units of momentum are kgms¯¹ or Newton Seconds (Ns)

Momentum is a vector quantity so it has a direction.

Law of conservation of momentum

Momentum is conserved in all collisions, explosions and…

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Elastic and inelastic collisions

Kinetic energy is conserved in elastic collisions.
Kinetic energy is not conserved in inelastic collisions.
Momentum is conserved in all collisions
Total energy is conserved in all collisions

In inelastic collisions some kinetic energy is converted to other forms of energy ( mainly heat). Large…


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