A box is being moved with a velocity v by a force p (parallel to v) along a level horizontal floor. The normal force is FN, the kinetic firictional force is fk, and the weight of the box is mg. Decide which forces do positive, zero, or megative work. Provide a reason for each of your answers
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Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
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A box is being moved with a velocity v by a force p (parallel to v) along a level horizontal floor....
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