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Section 1 (cont.) Power

Section 1 (cont.) Power. I. Power . A. The rate at which work is done. B. Power is measured in Watts (W). Examples: A medium-sized car engine is rated at 50,000 to 100,000 Watts

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Section 1 (cont.) Power

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  1. Section 1 (cont.) Power

  2. I. Power A. The rate at which work is done.

  3. B. Power is measured in Watts (W). • Examples: • A medium-sized car engine is rated at 50,000 to 100,000 Watts • A person who weighs 220 pounds climbing a 10 foot high ladder in 5 seconds is doing work at a rate of about 600 Watts

  4. W t P It takes 100,000 J of work to lift an elevator 18 meters. If this is done in 20 seconds, what is the average power of the elevator during this time? GIVEN: WORK: W = 100,000 J t = 20 s P = ? work time P = 100,000 J 20 s P = P = 5,000 W

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