Work

  1. How much work is done by the 120 N force in the diagram?
  2. 24 joules
  3. 60 joules
  4. 120 joules
  5. 600 joules
  1. Which of the following represents 10 joules of work?
  2. An upward force of 5 N supports a stationary box that is 2 m off the ground.
  3. A horizontal force of 1 N drags a toy car a horizontal distance of 10 meters.
  4. A horizontal force of 10 N moves a block 10 meters in the direction of the force.
  5. A toy car with a weight of 1 N is moved a horizontal distance of 10 meters.
  1. Which of these represents a correct set of units for work and energy?
  1. kilogram meters b. joules per second c. newton meters d. newton seconds
  1. Explain how a very large force applied to an object can do no work.
  1. Describe a situation in which a large force applied to an object does no work even though the object is moving.
  1. How much work does it take to hold a dumbbell motionless over your head for 10s?
  1. What is the largest force that an energy source containing 100 joules can exert continuously over a distance of 25 meters?
  1. 0.25 N b. 4 N c. 25 N d. 2,500 N
  1. Which statement below correctly describes the relationship between work and energy?
  2. Energy is the ability to do work.
  3. Work must be done in order for energy to be transferred between objects.
  4. Work must be done in order for energy to change from one form to another.
  5. All of the above.

Work

  1. How much work is done by the 120 N force in the diagram?
  2. 24 joules
  3. 60 joules
  4. 120 joules
  5. 600 joules
  1. Which of the following represents 10 joules of work?
  2. An upward force of 5 N supports a stationary box that is 2 m off the ground.
  3. A horizontal force of 1 N drags a toy car a horizontal distance of 10 meters.
  4. A horizontal force of 10 N moves a block 10 meters in the direction of the force.
  5. A toy car with a weight of 1 N is moved a horizontal distance of 10 meters.
  1. Which of these represents a correct set of units for work and energy?
  1. kilogram meters b. joules per second c. newton meters d. newton seconds
  1. Explain how a very large force applied to an object can do no work.
  1. Describe a situation in which a large force applied to an object does no work even though the object is moving.
  1. How much work does it take to hold a dumbbell motionless over your head for 10s?
  1. What is the largest force that an energy source containing 100 joules can exert continuously over a distance of 25 meters?
  1. 0.25 N b. 4 N c. 25 N d. 2,500 N
  1. Which statement below correctly describes the relationship between work and energy?
  2. Energy is the ability to do work.
  3. Work must be done in order for energy to be transferred between objects.
  4. Work must be done in order for energy to change from one form to another.
  5. All of the above.

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