Answer: 321 J
Explanation:
Given
Mass of the box
Force applied is
Displacement of the box is
Velocity acquired by the box is
acceleration associated with it is
Work done by force is
change in kinetic energy is
According to work-energy theorem, work done by all the forces is equal to the change in the kinetic energy
Therefore, the magnitude of work done by friction is
He answer is A. <span>encourage agricultural usage in the watershed
if you want to read it for yourself go to
www.nature.org/ourinitiatives/regions/northamerica/unitedstates/indiana/journeywithnature/watersheds...
hope this helps you!!</span>
Explanation:
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