Physics

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1. What is the formula for efficiency

  • efficiency= total energy supplied/ useful energy produced
  • efficiency=useful energy produced/total energy supplied
  • efficiency=useful energy supplied/total energy produced
  • efficiency= total energy produced/useful energy supplied
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2. What is acceleration

  • The rate of change of time
  • The rate of change of cars
  • The rate of change of velocity
  • The rate of change of distance

3. On a distance-time graph what does the gradient show?

  • The rate of change of distance
  • The position of an object
  • The rate of change of time
  • The rate of change of velocity

4. What is the formula for acceleration

  • acceleration=velocity/time
  • acceleration=change in velocity/time taken
  • acceleration=time taken/change in velocity
  • acceleration=time/velocity

5. What is power

  • The rate of changing energy
  • The government
  • The rate of speed
  • A sense of status
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