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Search Results for work - All Grades

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Grade 9 Subject-Verb Agreement
Grade 9 Energy and Momentum
When a pitcher tosses a baseball, which of the following is true?
  1. When the ball leaves his hand, he is no longer doing work on it.
  2. He is doing work on the ball until it stops or changes direction.
  3. He never does any work on the ball.
  4. Work is being done after the ball leaves his hand, but not before.
Grade 11 Energy and Momentum
A person walks up a staircase, and a second person runs up the staircase. Who does more work?
  1. the person who walks up
  2. the person who runs up
  3. same work is done in both situations
  4. impossible to determine without knowing their masses
Grade 8 Energy and Momentum
Grade 6 Energy and Momentum
Work is being done when
  1. you apply a force to an object.
  2. an object is moving after you apply a force to it.
  3. you exert a force that moves an object in the direction of the force.
  4. you do something that is difficult.
Grade 8 Energy and Momentum
Which of the following conditions must be met for work to be done?
  1. A force must be applied.
  2. There must be movement over a distance.
  3. The direction of force and movement must be the same.
  4. All of the above.
Grade 8 Energy and Momentum
Grade 6 Energy and Momentum
What is the unit for work?
  1. joule
  2. joule per second
  3. newton
  4. watt
Grade 5 Simple Machines
How does a simple machine make work easier?
  1. requires less time
  2. requires less force
  3. requires less money
  4. requires less movement
Grade 8 Energy and Momentum
Which of the following best describes the concept of work?
  1. a force applied to an object
  2. a force moves an object through a distance
  3. the transformation of energy
  4. the rate at which energy is transformed
Grade 8 Energy and Momentum
Grade 9 Simple Machines
If you measured the distance a desk moved across the floor when pushed by a student, and were told the total amount of work done, what other piece of information could you use this information to calculate?
  1. How long it took to move the desk
  2. How much force was applied
  3. The speed of the desk
  4. The acceleration of the desk
  5. The power of the student
Grade 9 Simple Machines
When water turns a turbine at a dam, the kinetic energy of the falling water changes to mechanical energy of the spinning turbine. Which of the following is an accurate description of the situation?
  1. The turbine is providing potential energy to the water.
  2. The total amount of energy in the system is decreasing.
  3. The water is doing work on the turbine.
  4. The total amount of energy is increasing.
  5. The water is converting its kinetic energy to potential energy.
Grade 10 Energy and Momentum
Which one is doing the most work?
  1. pulling a box 10 m with a force of 100 N
  2. pushing a box 100 m with a force of 200N
  3. pulling a sled 1000 m with a force of 10N
  4. pushing a car with a force of 100000 N and it doesn't move
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