Quizz energy and work

Work, Energy, & Power in Physics: Homework Help Chapter Exam

Work, Energy, & Power in Physics: Homework Help / Practice Exam

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1.Which best describes work?

• The force on an object divided by the distance the object is moved
• The pressure on an object times the distance the object is moved
• The force on an object times the distance the object is moved
• The length of time it takes to lift an object in the air
• The pressure over a given area

2.Which is NOT a component of work done on an object?

• The distance of the displacement
• The force applied
• All are correct
• The velocity of the object

3.Which of the following is the best definition for energy?

• The conversion of weight into mass.
• Anything that has mass and volume.
• The movement of an object some distance.
• The capacity to do work.

4.In the absence of friction, how much energy would be lost as a rollercoaster car goes down the first of several 'hills'?

• None of it is lost.
• 1/4
• All of it is lost.
• 1/5
• 1/2

5.Which of the following is NOT true about the work-energy theorem?

• All are correct
• It applies to any change in energy
• It only applies to an increase in energy
• It applies to both increases and decreases in energy
• It states that work done is equal to the change in energy