Momentum

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Physics Newtonian Mechanics Momentum

	Two-Body Collisions:
	Consider two objects of masses m1 and m2. If the objects collide with each other then there are two possibilities: (i) elastic collision and (ii) inelastic collision. And the coefficient of restitution or COR of an object is defined as the fractional value representing the ratio of velocities before and after an impact: where V_1f and V_2f are final velocities of the objects after impact and V1 and V2 are the initial velocities of the considered objects before impact. (i) Elastic collision: During the elastic collision the total kinetic energy of the system before and after collision are same. In addition, the linear momentum is also conserved. Hence, And coefficient of restitution for perfectely elastic collision is e= 1