Force

Figure 7 -16 shows constant force  width= and  width= acting on a box as the box slides rightward across a frictionless floor. Force  width= is horizontal, with magnitude 2.0 N; force  width= is angled upward by 60° to the floor and has magnitude 4.0 N. The speed v of the box at a certain instant is 3.0 m/s. What is the power due to each force acting on the box at that instant, and what is the net power? Is the net power changing at that instant?

 width=

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