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AP Physics 1
3.4 Conservation of Energy
3.3 Potential Energy
3.2 Work
3.1 Translational Kinetic Energy
BeginnerMCQConceptual13.3k
A solid rectangular block rests on a thin horizontal surface line. Four force arrows originate from the center of the block and point outward along the principal axes. A vertical arrow points straight upward beyond the top edge of the block, labeled \(F_{\text{Normal}}\). A vertical arrow of equal length points straight downward through the bottom edge and surface, labeled \(F_{\text{gravity}}\). A horizontal arrow points straight to the right beyond the right edge of the block, labeled \(F_{\text{applied}}\). A horizontal arrow of equal length points straight to the left beyond the left edge of the block, labeled \(F_{\text{friction}}\). No other forces, labels, dimensions, or background elements are shown.
A box sliding across a horizontal surface with four forces acting on it.
The box in the diagram is sliding to the right across a horizontal table, under the influence of the forces shown. Which force(s) is doing negative work on the box?

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