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Physics (AS & A Level) · Oct / Nov 2017 · Paper 13 · Question 15

9702Energy conservation

A ball is thrown vertically upwards. Air resistance is negligible. Which statement is correct?

  1. ABy the principle of conservation of energy, the total energy of the ball is constant throughout its motion.
  2. BBy the principle of conservation of momentum, the momentum of the ball is constant throughout its motion.
  3. CThe kinetic energy of the ball is greatest at the greatest height attained.
  4. DThe potential energy of the ball increases at a constant rate during its ascent.

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Correct answer: A. By the principle of conservation of energy, the total energy of the ball is constant throughout its motion.

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