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Q.(e). A metal ball of mass 60 g falls on a concrete floor from a vertical of 2.8 m and rebounds to a height of 1.3 m. Find the change in K.E. in S.I. units.

Dear Student ,
Here is a link which will help you to get the answer of this question with proper explanation .
https://www.meritnation.com/ask-answer/question/a-rubber-ball-of-mass-100-g-falls-from-a-height-of-1m-and-re/laws-of-motion/6073317
After you find the change in velocity then use it to find the change in kinetic  energy and the SI unit of kinetic energy is J .

Regards

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