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A hollow ball projectile weighing 9kg and radius equaling 100.00mm is shot vertically down from a...

A hollow ball projectile weighing 9kg and radius equaling 100.00mm is shot vertically down from a height of 45m with an initial velocity of 2.0 m/s. It rotates about its center at 12 rads/s and speeds up at a rate of 2.2 rads/s2.

What is the change in kinetic energy between its initial release and when it hits the ground?

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