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How much work is done if 500 W of power is used over 2 minutes?
An Olympic weight lifter strains to lift a record amount without moving the weights from the floor. A sportscaster lifts her microphone to report on the attempt. Who is doing more work?
How much power is needed to do 1,000 J of work on a box if it takes 50 s to lift it?
A painter lifts a 3 kg can of paint 3 m above the floor. How much work was done?
Explain the relationship between work, force, and distance.
How are work, time, and power related?
You use 200 N of force to push a snow shovel 10 m along the ground. How much work was done?
Compare and contrast the relationship of work and power to energy.
A 700-watt gasoline engine and a 300-watt electric motor both do 3 J of work. Which machine can do the work faster? Explain your answer.
Kelly carried a box weighing 10 N the 200 meters from his car to his new house. George took the box from Kelly and carried it up the 3 meter tall flight of stairs. Who did more work?
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