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Greg applies a force of 200 N to move a box 2 meters. How much work did he do?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
When a screwdriver is used as a lever to open a paint can, what is changed as the work is done?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
Which of the following must happen for work to be done?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
If two people lift identical stacks of books the same direction and one person does the job twice as fast which of the following is true?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
The rate at which energy is transformed is called what?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
What is an inclined plane that is wrapped around a cylinder?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
What is a machine that is made of two simple machines?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
In which situation is a person doing work on an object?
the size and direction of the input force
compound machine
a school crossing guard raises a stop sign that weighs 10N.
power
400 J
The object must move in the same direction as the force.
screw
power
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