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WorksheetsWork, Energy, & Power B
Total questions: 10
Worksheet time: 5mins
What is the unit of power?
newton
watt
meter
joule
Power is defined as __________.
force times distance
force divided by time.
work divided by time.
work times time.
If you exert a force of 10.0 N to lift a box a distance of 3 m, how much work do you do?
30J
300 J
90 J
900 J
Work is defined by _____________.
force times time
force devided by time
force times distance
force divided by distance
What is the unit of work?
Joule
newton
watt
all of these
A force acting on an object does no work if
a machine is used to move the object.
the force does not cause the object to move.
the force is greater than the force of friction.
the object accelerates.
Which of the following statements is true according to the law of conservation of energy?
Energy cannot be created.
Energy cannot be destroyed.
Energy can be converted from one form to another.
all of these
An object’s gravitational potential energy is directly related to which of the following?
its height relative to a reference level
its mass
acceleration due to gravity
all of these
The energy of motion is called
kinetic energy.
potential energy.
thermal energy.
work.
Work is a transfer of
energy
force
mass
motion
