A 5,400 W motor is used to do work. If the motor is used for 640 s, about how much work could it do?
A crane does 9,500 J of work to lift a crate straight up using a force of 125 N. How high does the crane lift the crate?
How do the units of work and power compare?
Which statement about work and power correctly describes an automobile race?
Examine the scenarios.Scenario W: A force of 75 N moves a box 15 m.Scenario X: A force of 100 N moves a box 12 m.Scenario Y: A force of 50 N moves a box 20 m.Scenario Z: A force of 25 N moves a box 45 m.
How is power calculated?
Hiro walks up a flight of stairs in his apartment building. Later in the day, he runs up the same flight of stairs.
A force of 75 N at an angle of 15° to the direction of motion moves a chair 3 m. Which change would result in more work being done on the chair?
In which scenario is an animal doing work? Check all that apply.A cat lifts up her kitten by its neck.A dog rubs his back against a large tree.A bird flies a worm from the ground to its nest in a tree.A goat butts its head against the barn wall.A horse pulls a wagon along a road.
In which scenario is the least amount of work done on a crate?
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