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an inclinced plane mass is .5kg inclinced plane at 30 degrees is 6.40m long, a book has kinetic friction with the incline of .2 and is placed at the top and begins to slide using the law of conservation of energy

a) find out the speed at the bottom of the incline

b) work done by friction

c) how much time did it take for the book to get to the bottom.

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