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WORK POWER AND ENERGY MCQs

Total Questions : 33 | Page 3 of 4 pages
Question 21. How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
  1.    15 J
  2.    45 J
  3.    0 J
  4.    5 J
 Discuss Question
Answer: Option C. -> 0 J
Question 22. What type of energy do we use to cook food?
  1.    mechanical
  2.    radiant
  3.    thermal
  4.    kinetic
 Discuss Question
Answer: Option C. -> thermal
Question 23. A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters
  1.    200 J
  2.    80 J
  3.    5 J
  4.    2000 J
 Discuss Question
Answer: Option D. -> 2000 J
Question 24. A student with a mass of 62 kg walks up a flight of stairs with a height of 3
  1.    walk slower
  2.    walk faster
  3.    carry his friends books
  4.    All of above
 Discuss Question
Answer: Option A. -> walk slower
Question 25. Check all of the things that can affect power
  1.    Work
  2.    Time
  3.    Force
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Question 26. A roller coaster whose average speed is 32 m/s is at the top of a 72m hill and weighs 966N
  1.    almost all kinetic energy
  2.    almost all potential energy
  3.    mostly kinetic energy
  4.    some kinetic and some potential energy
 Discuss Question
Answer: Option B. -> almost all potential energy
Question 27. The is the energy due to the splitting of atoms
  1.    nuclear
  2.    chemical
  3.    mechanical
  4.    radiant
 Discuss Question
Answer: Option A. -> nuclear
Question 28. If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
  1.    272 m
  2.    17 m
  3.    4.05 m
  4.    272 cm 
 Discuss Question
Answer: Option B. -> 17 m
Question 29. This is energy that is stored for later use
  1.    kinetic energy
  2.    potential energy
  3.    mechanical energy
  4.    radiant energy
 Discuss Question
Answer: Option B. -> potential energy
Question 30. What type of simple machine is a wheelchair access ramp?
  1.    Inclined plane
  2.    Lever
  3.    Wedge
  4.    Wheel and Axle
 Discuss Question
Answer: Option A. -> Inclined plane

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