Please answer these questions

Dear student,
Due to the paucity of time, we are not able to solve this much query.
So post different queries in different threads and mark properly in which query you are having the problem.
For the Answer to the first question, refer to the link below,
https://www.meritnation.com/ask-answer/question/what-is-the-derivation-of-kinetic-energy-and-potential-en/work-and-energy/3986601 
The S.I unit of K.E is Joule

Regards



 

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