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In this lesson you will learn about power. Complete the following activity to get started.

Girl Climbing Stairs A simple way to measure the power output of a person is to measure the time it takes the person to walk/run up a flight of stairs (or bleachers). In this experiment you will measure your power in climbing a flight of stairs.

  1. Measure the height from the ground to the second floor/top of stairs.
  2. Record your name and weight (in pounds) or use the scale to obtain your mass (in kilograms).
  3. Measure the time it takes to run (or walk) to the desired height.

Calculate the power you used using the equation:

Power = Work ÷ Time.

How much power did you use?