Suppose a ball of mass m is thrown vertically upwards with an initial speed v, its speed decreases continuously till it becomes zero. Therefore, the ball begins to fall downward and attains the speed v again before striking the ground. It implies that the magnitude of initial and final momenta of the ball are same. Yet, it is not an example of conservation of momentum. Explain why?
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Explanation:
because according to law of conservation of momentum , the sum of momenta of two bodies before collision is equal to the sum of momenta after Collision .
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