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30 November, 10:31

When the balloon hits the ground, it rebounds slightly. What is the source of the energy for this rebound? A. When the balloon hits the ground, the water warms; this thermal energy is converted to gravitational potential energy of the rebounding balloon. B. As the balloon hits the ground, the edges rise up; this gravitational potential energy is shared with the rest of the balloon. C. When the balloon hits the ground, the rubber envelope stretches, storing elastic potential energy; this elastic potential energy is converted to the gravitational potentiaL

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  1. 30 November, 12:49
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    The correct answer is c. When the balloon hits the ground, the rubber envelope stretches, storing elastic potential energy; this elastic potential energy is converted to the gravitational potentiaL

    Explanation:

    Let's analyze the situation of the globe

    When it touches the ground, the part that is in contact decreases its velocity to zero, but the upper part of the ball continues to move, which creates that the molecules approach slightly, if we approximate the spring links, a repulsive force is created that after all the particles reach zero speed. The force of the springs moves the ball up until the force decreases to zero.

    We can relate this force of Hooke with an elastic energy

    This energy can be stored in the deformation of the system, as elastic potential energy, which is subsequently transformed into gravitational potential energy when the balloon is lifted.

    The correct answer is c
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