Work and Energy

Class 9 · Science

16 questions7 easy6 medium3 hard

Sample Questions

Q1.How much work is done by a force of 20 N acting on an object through a distance of 5 m?

  • A100 J
  • B4 J
  • C25 J
  • D15 J

Q2.What is the SI unit of work?

  • AJoule (J)
  • BNewton (N)
  • CWatt (W)
  • DPascal (Pa)

Q3.If an object has kinetic energy of 100 J and potential energy of 200 J, what is total mechanical energy?

  • A300 J
  • B100 J
  • C200 J
  • D20000 J

Q4.What is potential energy?

  • AEnergy stored due to position or configuration
  • BEnergy of motion
  • CEnergy of temperature
  • DEnergy of light

Q5.What is the SI unit of power?

  • AWatt (W)
  • BJoule (J)
  • CNewton (N)
  • DVolt (V)

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

CalculationEfficiencyEnergyEnergy ConservationEnergy LossGravitational PEGravityKinetic EnergyLaws of ThermodynamicsMechanical AdvantageMechanical EnergyMotionPotential EnergyPowerSI UnitsSimple MachinesWorkWork-Energy Theorem

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