With an initial speed u. its speed decrease to counter the frictional force25. Suppose a ball of mass m is throton vertically procontinuously till it becomes zero. Thereafter, the labegins to fall downward and attains the speed vasbefore striking the ground. It implies thatmagnitude of initial and final momentums of theare same. Yet, it is not an example of conservaof momentum. Explain why?EVERGREEN Self-Study in Scien

With an initial speed u. its speed decrease to counter the frictiona

1.	With an initial speed u. its speed decrease to counter the frictional force25. Suppose a ball of mass m is throton vertically procontinuously till it becomes zero. Thereafter, the labegins to fall downward and attains the speed vasbefore striking the ground. It implies thatmagnitude of initial and final momentums of theare same. Yet, it is not an example of conservaof momentum. Explain why?EVERGREEN Self-Study in Scien
Answer» 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.