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Power

Power. I should understand the definition of power, so I can:

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Power

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  1. Power • I should understand the definition of power, so Ican: • a) Calculate the power required to maintain the motion of an object with constant acceleration (e.g., to move an object along a level surface, to raise an object at a constant rate, or to overcome friction for an object that is moving at a constant speed). • b) Calculate the work performed by a force that supplies constant power, or the average power supplied by a force that performs a specified amount of work.

  2. Power Power is the rate at which work is done

  3. Power A man pushes a block with a mass of 15 kg across a floor with a force of 100N. Determine the a. the work the man does on the block if he pushes it 8 m b. the man’s power output for that 8 m

  4. Power A 500 kg car speeds up from 30m/s to 60 m/s in 7s. What is the power output of the car in Watts? If 1 horse power is 746 Watts, what is the car’s Horse Power?

  5. Power What power is required to push a 10 kg box at a constant velocity of 13 m/s against a frictional force of 50N?

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