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Home Page of Peggy E. Schweiger

Energy Sample Problems

  1. A 5 kg ball is lifted from the floor to a height of 1.5 m above the floor. What is its increase in potential energy?
  2. An 8 kg ball is moving at 4 m/s. Work is done on the ball to give it a speed of 12 m/s. What is the ball’s initial kinetic energy? What is the ball’s final kinetic energy? What work was done on the ball?
  3. A 3 kg object falls from a height of 10 m. What is its velocity just before it hits the ground?
  4. An object of mass “m” falls from a height of 10 m. What is its velocity just before it hits the ground?
  5. For the drawing shown, find the following at each point: The object's mass is 10 kg.

    drawing for problem number 5

    Work Notes

    Energy Notes

    Work Sample Problems

    Work Homework

    Energy Homework