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Worksheet: The Work–Energy Principle for a Variable Force

Q1:

The figure shows the action of a variable force 𝐹 on a body of mass π‘š kg as it moves a distance 𝑑 . Given that 𝐹 is measured in newtons, and 𝑑 is measured in meters, find the change in the body’s kinetic energy between 𝑑 = 0 m and 𝑑 = 6 m .

  • A βˆ’ 8 J
  • B βˆ’ 1 2 J
  • C βˆ’ 6 J
  • D βˆ’ 2 0 J

Q2:

The figure shows the action of a variable force 𝐹 on a body of mass π‘š kg as it moves a distance 𝑑 . Given that 𝐹 is measured in newtons, and 𝑑 is measured in meters, find the change in the body’s kinetic energy between 𝑑 = 0 m and 𝑑 = 6 m .

  • A βˆ’ 8 J
  • B βˆ’ 1 0 . 5 J
  • C 2.25 J
  • D βˆ’ 1 1 . 7 5 J

Q3:

The figure shows the action of a variable force 𝐹 on a body of mass π‘š kg as it moves a distance 𝑑 . Given that 𝐹 is measured in newtons, and 𝑑 is measured in meters, find the change in the body’s kinetic energy between 𝑑 = 0 m and 𝑑 = 6 m .

  • A βˆ’ 1 5 J
  • B βˆ’ 1 8 J
  • C βˆ’ 1 . 5 J
  • D βˆ’ 2 2 . 5 J