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A weightlifter presses a 400N weight 0.5m over his head in 2s. What is the power of the weightlifter?
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
What is kinetic energy?
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
What are the units of work?
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
How much power is required to do 180 J of work in 2.4s?
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
How much power is required to lift a 30N chair .20m in 2s?
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
_______ is defined as the rate at which work is done.
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
The transfer of energy to a body by the application of a force that causes the body to move in the direction of the force is called
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
Which of the following has the greatest potential energy?
J
3.0W
75W
work
a car parked at the top of a hill
power
energy an object has due to its motion
100W
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