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Kinetic & Potential Energy quiz Flashcards

Kinetic & Potential Energy quiz
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  • Which of the following molecules is likely to have the most potential energy: a molecule at a high altitude, a molecule at ground level, or a molecule in motion?

    A molecule at a high altitude is likely to have the most potential energy due to its height above the ground.
  • What is the formula for calculating kinetic energy?

    The formula for kinetic energy is KE = 1/2 mv^2, where m is mass and v is velocity.
  • How is potential energy calculated?

    Potential energy is calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.
  • What units are used to measure kinetic and potential energy?

    Both kinetic and potential energy are measured in joules (J).
  • What does the 'g' represent in the potential energy formula?

    In the potential energy formula, 'g' represents the acceleration due to gravity, which is 9.8 m/s² on Earth.
  • How are kinetic energy and potential energy related to mechanical energy?

    Kinetic energy and potential energy are forms of mechanical energy, which is the energy an object possesses due to its motion or position.
  • Can kinetic energy be converted into potential energy?

    Yes, kinetic energy can be converted into potential energy and vice versa, as they are interconvertible forms of mechanical energy.
  • What factors affect the potential energy of an object?

    The potential energy of an object is affected by its mass, the acceleration due to gravity, and its height above the ground.
  • What is the significance of the height in the potential energy formula?

    Height is significant in the potential energy formula because it determines the object's position relative to the ground, affecting its potential energy.
  • What is the relationship between mass and kinetic energy?

    The kinetic energy of an object is directly proportional to its mass and the square of its velocity.