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Worksheet: Kinetic Energy

Q1:

An 8.0-g bullet has a speed of 800 m/s.

What is its kinetic energy?

What is its kinetic energy if the speed is halved?

Q2:

How fast must a -kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s?

Q3:

An aircraft carrier has a mass of tons and moves at a speed of 24 nautical miles per hour. What is the kinetic energy of the aircraft carrier?

  • A12 GJ
  • B9.0 GJ
  • C6.0 GJ
  • D7.4 GJ
  • E4.1 GJ

Q4:

An automobile of mass kg has a velocity of km/h, a runner of mass 80 kg has a velocity of 10.0 m/s, and an electron has a velocity of m/s.

What is the kinetic energy of the automobile?

What is the kinetic energy of the runner?

What is the kinetic energy of the electron?

  • A J
  • B J
  • C J
  • D J
  • E J