Review Game Zone
Games
Test
Preview
Back
Match it!
Match it! Select the correct answer from the pull down...Good luck!
If you perform 30 J of work lifting a 20 N box from the floor to a shelf how high is the shelf?
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
A force acting on an object does no work if
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
A machine does work, it can do all of the following except
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
The standard (SI) unit of power is
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
Reducing friction in a machine
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
Why does friction decrease the efficiency of a machine ?
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
If you exert a force of 10.0 N to lift a box a distance of 0.75 m how much work do you do?
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
Which of the following increases when an object becomes warmer
It converts some input energy into thermal energy
1.5 m
Increases its efficiency
change the amount of work done.
the force is not in the direction of the object's motion
Watt
7.5 J
thermal energy
Check it!
Match it!
Match it!