Name:____________________________________Date:_______________Hour:_______
ProblemSet: Power
P stands for _______________ and is measured in ______________(_______)
W stands for _______________ and is measured in ______________(_______)
t stands for _______________ and is measured in ______________(_______)
F stands for _______________ and is measured in ______________(_______)
d stands for _______________ and is measured in ______________(_______)
1. A weightlifter uses 600 N of force to lift a barbell 2 m in 3 s. How much power was used to lift the barbell?
P=
W =
t =
F=
2. A crane lifts a steel girder in 40s. It required the crane to do 800,000 J of work. How much power did the crane use?
P=
W =
t =
3. The power produced by an electric motor is 500W. How long will it take the motor to do 1,000 J of work?
P=
W =
t =
4. How much work is done by a babysitter who uses 8000 W of power to lift a baby in 2s?
P=
W =
t =
5. What is the power of a toaster if it can perform 3000 J of work in 3 seconds?
P=
W =
t =
