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A box of mass 10.2 kg with an initial velocity of 2.1 m/s slides down a...

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Physics

A box of mass 10.2 kg with an initial velocity of 2.1 m/s slidesdown a plane, inclined at 28â—¦ with respect to the horizontal. Thecoefficient of kinetic friction is 0.69. The box stops aftersliding a distance x.

a. How far does the box slide? The acceleration due to gravityis 9.8 m/s 2 . The positive x-direction is down the plane. Answerin units of m.

b. What is the the work done by friction? Answer in units ofJ.

c. What is the work done by the normal force? Answer in units ofJ.

d. What is the magnitude of the work done by gravity? Answer inunits of J.

e. What is the magnitude of the instantaneous power generated byfriction half way between the initial and final positions? Answerin units of W.

f. What is the magnitude of the average power generated byfriction from start to stop? Answer in units of W.

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