Mechanical Energy 2




Mechanical Energy Problems

  1. An object with a mass of 5 kg is at a height of 10 meters above the ground. Given that the acceleration due to gravity is g = 10 m/s², determine the mechanical energy of the object.
  2. A ball with a mass of 2 kg falls freely from a height of 30 meters. If g = 10 m/s², when the ball reaches a height of 10 meters from the ground, calculate:
    1. Its velocity
    2. Its kinetic energy
    3. Its potential energy
  3. An object falls from a height of 6 meters above the ground. What is the velocity of the object when it reaches a height of 1 meter from the ground, if the acceleration due to gravity is 10 m/s²?
  4. A bullet with a mass of 100 grams is fired vertically upward from the ground with a velocity of 80 m/s. If g = 10 m/s², calculate:
    1. The maximum height reached by the bullet
    2. The energy of the bullet at its highest point
    3. The kinetic energy of the bullet at a height of 40 m from the ground
  5. An object initially on the ground is thrown vertically upward with an initial velocity of V = 20 m/s. If the mass of the object is 3 kg and g = 10 m/s², calculate:
    1. The height reached by the object
    2. The kinetic energy of the object at a height of 8 m above the ground
Answer

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