Explain law of conservation of momentum with help of an activity to show collision of two balls that ,"Total momentunm of the two balls remains unchanged or conserved when on other external force acts on them .
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Explanation:
If the two objects stick together after the collision and move with a common velocity vf, then the collision is said to be perfectly inelastic. Note: In collisions between two isolated objects momentum is always conserved. Kinetic energy is only conserved in elastic collisions.
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