Force, Work & Energy Worksheet-10

Force, Work & Energy Worksheet-10

 

True or False

  1. Ice causes less friction.

  2. Carpet produces more friction.

  3. We can say work is done only if a force exerted on an object moves it in the direction of the force.

  4. We can say work is not done if a force exerted on an object does not moves it in the direction of the force.

  5. We cannot move everything with our bare hands.

  6. When work is difficult to do with our hands, we use tools called machines.

  7. Smoother materials produce more  friction.

  8. Rougher materials cause less friction.

  9. Machines make our work more hard.

  10. Anything that started moving would always stop, if there was no friction.

 

Answer Key:

  1. True

  2. True

  3. True

  4. True

  5. True

  6. True

  7. False

  8. False

  9. False

  10. False