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Q. A 12-kg box is free from the top of an incline that is 5.00m long and makes an angle of 40 degrees to the horizontal. A 60-N friction force impedes the motion of the box. (i) What would be the acceleration of the box? (ii) How long would it take to reach the bottom of the incline, and (iii) what is the coefficient of friction between the box and incline?

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