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General Science

WORK POWER AND ENERGY MCQs

Total Questions : 33

Page 1 of 4 pages
Question 1. Kinetic energy is associated with ---
  1.    speed
  2.    position
  3.    direction
  4.    temperature
 Discuss Question
Answer is Option A. -> speed
Question 2. What are the two necessary conditions for work to be done?
  1.    Force and Velocity
  2.    Force and Displacement
  3.    Force and Time
  4.    None of these
 Discuss Question
Answer is Option B. -> Force and Displacement
Question 3. Why does the total amount of mechanical energy stay constant in a system?
  1.    energy is not created or destroyed
  2.    energy leaves
  3.    energy enters
  4.    energy is not converted from one form into another
 Discuss Question
Answer is Option A. -> energy is not created or destroyed
Question 4. What is the formula for calculating the total amount of mechanical energy?
  1.    ME = KE + PE
  2.    KE = ME + PE
  3.    PE = KE + ME
  4.    ME = 1/2 mv2
 Discuss Question
Answer is Option A. -> ME = KE + PE
Question 5. Elastic potential energy is energy stored in object that are compressed or __________
  1.    movement
  2.    stored
  3.    harnessed
  4.    pulled 
 Discuss Question
Answer is Option B. -> stored
Question 6. A cannon shoots a 1000 N stunt performer 100 m
  1.    100,000 J
  2.    10,000 J
  3.    10 J
  4.    1,000,000 J
 Discuss Question
Answer is Option A. -> 100,000 J
Question 7. What type of simple machine is a bike pedal?
  1.    Inclined Plane
  2.    Pulley
  3.    Wedge
  4.    Lever
 Discuss Question
Answer is Option D. -> Lever
Question 8. The sun provides ____________ and ____________ energy that can be harnessed and used for solar power
  1.    chemical, sound
  2.    mechanical, light
  3.    sound, light
  4.    light, thermal
 Discuss Question
Answer is Option D. -> light, thermal
Question 9. A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds
  1.    400 J
  2.    1200 J
  3.    200 J
  4.    120 J
 Discuss Question
Answer is Option B. -> 1200 J
Question 10. If a 1300-kg car has been lifted so it has 19500 J of potential energy, it was lifted up ---
  1.    1.5 m
  2.    150 m
  3.    15 m
  4.    0.67 m
 Discuss Question
Answer is Option A. -> 1.5 m
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