Physics Unit 3
Doing work at a faster rate requires more ____. To increase power, you can increase the amount of ____ done in a given time, or you can do a given amount of work in less time.
power work
For a force to do work on an object, some of the force must act in the _____ direction as the object moves. If there is no movement, no ____ is done.
same work
If all of the force acts in the ____ direction as the motion, all of the force does ____.
same work
Work is done when a force acts on an object in the direction that ________.
the object moves
The SI unit of power is the _____, which is equal to one joule per second.
watt
Power is the rate of doing ____.
work
The joule is the SI unit of ____.
work
____ is the product of force and distance.
work
force X distance = ____
work
When using SI units in the power equation, ____ is measured in joules, and _____ is measured in seconds.
work time
Power= _______
work/time
A joule is equal to ________.
1 Newton-meter
If ____ of the force acts in the same direction as the motion, all of the force does work.
all
Work depends on _____.
direction
For a force to do work on an object, some of the force must act in the same ___ as the object moves. If there is no ____, no work is done.
direction movement
If none of the force is applied in the ____ of the motion, the force does _______.
direction no work
When using SI units in the work formula, the ____ is in meters.
distance
Any part of a force that ____ act in the direction of motion does no work on the object.
does not
Doing work at a ____rate requires more power. To increase ____, you can increase the amount of work done in a given time, or you can do a given amount of work in less time.
faster power
When using SI units in the work formula, the ____ is in newtons.
force
Work is the product of ____ and ____.
force distance
work= ________
force X distance
A ____ is equal to 1 Newton-meter.
joule
The ____ is the SI unit of work.
joule
When using SI units in the power equation, work is measured in _____, and time is measured in ______.
joules seconds
When using SI units in the work formula, the distance is in _____.
meters
If all of the force acts in the same direction as the ____, all of the ____ does work.
motion force
If part of the applied force acts in the direction of ____, that part of the force does ____..
motion work
When using SI units in the work formula, the force is in ______.
newtons
Any part of a force that does not act in the direction of motion does ________ on the object.
no work
If ____ of the force is applied in the direction of the motion, the force does no work.
none
If ____ of the applied force acts in the direction of motion, that part of the force does work.
part
_____ is the rate of doing work.
power
work/time= _____
power
The SI unit of ____ is the watt, which is equal to __________.
power one joule per second
