AP®PhysicsCollege BoardPhysics 1: Algebra-BasedExam QuestionsUnit 3: Work, Energy & PowerWork

Work (College Board AP® Physics 1: Algebra-Based)

Exam Questions

5 mins5 questions
1
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Car A is stuck in a muddy ditch. Car B stops to help and fastens a rope between Car A and Car B to tow Car A out of the mud. The engine revs and mud is thrown by the tires of Car B, but Car A does not move from its position in the ditch.

Car A has a mass of 1500 space kg, and Car B has a mass of 2000 space kg. Which statement is correct for the work done by Car B on Car A.

  • There is zero work done.

  • The work done is dependent on the force applied by Car B on Car A.

  • Energy is transferred into the system by Car B's engine, so the work done is positive.

  • Energy is transferred away from the system due to the mud spray, so the work done is negative.

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2
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A variable force is exerted on an object, causing a displacement. Which of the following can be used to determine the work done by the applied force on the object?

  • W space equals space F d

  • W space equals space F subscript parallel to d

  • W space equals space F d open parentheses cos space theta close parentheses

  • Area under force-versus-displacement graph

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3
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Which of the following statements is correct for the work done on an object?

  • The work done on an object by a non-conservative force is path-independent.

  • The work done on a system will be zero if the applied force is non-conservative and the system returns to its initial configuration.

  • The work done by a conservative force on a system is dependent only on the initial and final positions of the objects.

  • The work done on a system by conservative forces is affected by the amount of energy dissipated to the surroundings.

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4
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A constant force is exerted on an object of mass 0.25 space kg in the direction of the object's displacement. The object is accelerated at 2.0 space straight m divided by straight s squared over a distance of 1.75 space straight m. Which of the following values shows the work done on the object.

  • 0.87 space straight N

  • 0.87 space straight J

  • 0.88 space straight N

  • 0.88 space straight N times straight m

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5
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A 22 space kg crate is pulled along a horizontal surface for 5.2 space straight m using a rope with a tension force of 27 space straight N at an angle of 32 degree to the horizontal. Which of the following values is correct for the work done on the crate?

  • 110 space straight N times straight m

  • 120 space straight N times straight m

  • 130 space straight N times straight m

  • 140 space straight N times straight m

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