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In which of the following situations does the force in question do negative work? Check all that apply. OThe frictional force slows a car as it skids to a stop. A rock falls to the ground under the influence of the gravitational force. | The towrope exerts a force on a water skier who is towed behind a speedboat. OThe normal force pushes upward on Jean as she rides an escalator to a higher floor at the mall. OThe gravitational force on a bus is directed downward as the bus moves over a horizontal road. The normal force pushes upward on a bicycle as it rides over horizontal ground. OEmily pulls upward on her briefcase to support it as she stands at the bus stop, waiting for the bus to arrive. DA batted baseball is slowed by the gravitational force as it rises into the air. A block slides down an inclined plane, and the normal force is perpendicular to the plane.

In which of the following situations does the force in question do negative work? Check all that apply. OThe frictional force slows a car as it skids to a stop. A rock falls to the ground under the influence of the gravitational force. | The towrope exerts a force on a water skier who is towed behind a speedboat. OThe normal force pushes upward on Jean as she rides an escalator to a higher floor at the mall. OThe gravitational force on a bus is directed downward as the bus moves over a horizontal road. The normal force pushes upward on a bicycle as it rides over horizontal ground. OEmily pulls upward on her briefcase to support it as she stands at the bus stop, waiting for the bus to arrive. DA batted baseball is slowed by the gravitational force as it rises into the air. A block slides down an inclined plane, and the normal force is perpendicular to the plane.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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In which of the following situations does the force in question do negative work? Check al1 that apply. The frictional force slows a car as it skids to a stop. DA rock falls to the ground under the influence of the gravitational force. OThe towrope exerts a force on a water skier who is towed behind a speedboat. The normal force pushes upward on Jean as she rides an escalator to a higher floor at the mall. OThe gravitational force on a bus is directed downward as the bus moves over a horizontal road. OThe normal force pushes upward on a bicycle as it rides over horizontal ground. OEmily pulls upward on her briefcase to support it as she stands at the bus stop, waiting for the bus to arrive. OA batted baseball is slowed by the gravitational force as it rises into the air. A block slides down an inclined plane, and the normal force is perpendicular to the plane.
Transcribed Image Text:In which of the following situations does the force in question do negative work? Check al1 that apply. The frictional force slows a car as it skids to a stop. DA rock falls to the ground under the influence of the gravitational force. OThe towrope exerts a force on a water skier who is towed behind a speedboat. The normal force pushes upward on Jean as she rides an escalator to a higher floor at the mall. OThe gravitational force on a bus is directed downward as the bus moves over a horizontal road. OThe normal force pushes upward on a bicycle as it rides over horizontal ground. OEmily pulls upward on her briefcase to support it as she stands at the bus stop, waiting for the bus to arrive. OA batted baseball is slowed by the gravitational force as it rises into the air. A block slides down an inclined plane, and the normal force is perpendicular to the plane.
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