Q:

A ball initially with 20 J of potential energy has rolled halfway down a slope and is still moving. Which of the following values of kinetic energy (KE) and gravitational potential energy (PE) is it likely to have?

waelhammad
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2022-10-22
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A ball initially with 20 J of potential energy has rolled halfway down a slope and is still moving. Which of the following values of kinetic energy (KE) and gravitational potential energy (PE) is it likely to have?

  1. 36.0 J of KE and 0 J of PE.
  2. 37.0 J of KE and 10 J of PE.
  3. 38.10 J of KE and 10 J of PE.
  4. 39.10 J of KE and 0 J of PE.
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waelhammad
2022-10-22
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C: the total amount of PE + KE must still be 20 J. As the ball has rolled halfway down the slope, half of its gravitational potential energy has been transformed into kinetic energy. 

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