Saturday
January 31, 2015

Homework Help: physics

Posted by Anonymous on Sunday, June 16, 2013 at 10:36am.

Suppose a ball of mass m is thrown vertically upward with an initial speed v, its
speed decreases continuously till it becomes zero. Thereafter, 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 momentums of the ball are same.
Yet, it is not an example of conservation of momentum. Explain why ?

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