A boulder that is resting on the top of a cliff slips over the edge and accelerates towards the ground. As the rock falls, the amount of kinetic energy A) increases. B) decreases. C) stays the same. D) increases then decreases.
The correct answer for this question would be A) Increases because the potential energy of the boulder was it resting on the top of the cliff, and the kinetic energy was the boulder accelerating to the ground so it was increasing and in motion.
As the rock falls, the amount of kinetic energy increases. Kinetic energy is energy of motion, and potential energy is transformed to kinetic energy as the rock accelerates toward the ground.
