Intro to Energy & Kinetic Energy Video Lessons

Concept

Problem: Which of the following statements is true regarding potential energy and kinetic energy?(a) Water at the top of the dam has potential energy, water falling through a dam has kinetic energy. The moving water performs work by moving the blades of turbines in the dam to generate electricity.(b) Water gains kinetic energy as it falls through a dam, water uses potential energy as it moves the blades of turbines in the dam to generate electricity.(c) Water gains potential energy as it falls through a dam, water uses kinetic energy as it moves the blades of turbines in the dam to generate electricity.(d) Water at the top of the dam has kinetic energy, water falling through dam has potential energy. The moving water performs work by moving the baldes of turbines in the dam to generate electricity.

FREE Expert Solution

We are required to explain the energy transformations for water in a dam.

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Problem Details

Which of the following statements is true regarding potential energy and kinetic energy?

(a) Water at the top of the dam has potential energy, water falling through a dam has kinetic energy. The moving water performs work by moving the blades of turbines in the dam to generate electricity.

(b) Water gains kinetic energy as it falls through a dam, water uses potential energy as it moves the blades of turbines in the dam to generate electricity.

(c) Water gains potential energy as it falls through a dam, water uses kinetic energy as it moves the blades of turbines in the dam to generate electricity.

(d) Water at the top of the dam has kinetic energy, water falling through dam has potential energy. The moving water performs work by moving the baldes of turbines in the dam to generate electricity.