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PS CH 14 Voc S1 & S2 (12)
供稿人: Conway
  • 1. the product of distance and the force in the direction an object moves
A) Energy
B) Force
C) Power
D) Work
  • 2. the SI unit of work, equal to 1 newton-meter
A) Watt (W)
B) Meter (m)
C) Joule (J)
D) Newton (N)
  • 3. the SI units of power, equal to 1 Joule per second
A) Kilogram (kg)
B) Newton (N)
C) Wattt (W)
D) Joule (J)
  • 4. the rate of doing work
A) Work
B) Force
C) Power
D) Momentum
  • 5. a common unit of power, equal to about 746 watts
A) Possumpower
B) Hippopotamuspower
C) Horsepower
D) Cockroachpower
  • 6. a device that changes a force
A) Power
B) Mechanical Advantage
C) Machine
D) Input Force
  • 7. the force exerted on a machine
A) Friction force
B) Input force
C) Input arm
D) Work input
  • 8. the distance through which the input force acts in a machine
A) Output distance
B) Input distance
C) Fulcrum
D) Wheel and axle
  • 9. the work done on a machine as the input force acts through the input distance
A) Work output
B) Work input
C) Work resistance
D) Work efficiency
  • 10. the force exerted by a machine
A) Output distance
B) Output force
C) Ouput work
D) Output energy
  • 11. the distance an output force acts through in a machine
A) Output distance
B) Ouput Watt
C) Input distance
D) Wedge
  • 12. the work done by a machine as the output force acts through the output distance
A) Power output
B) Work input
C) Work output
D) Power input
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