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_________ happens when a force causes an object to move in the same direction that the force is applied.
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
Which is an example of a simple machine?
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
Which statement describes the flow of heat?
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
A simple machine makes work easier by _____________.
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
When you use a hammer to pull a nail from a piece of wood, which simple machine are you using?
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
Two men are standing on either side of a box pushing against each other. They each push for 30 seconds but do not move the box. The men applied _____________ but no _____________ was done.
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
The difference between a simple machine and a complex machine is __________
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
According to the Law of Conservation of Energy, the total amount of energy in the universe ______________.
force, work
reducing the force needed to move an object
Heat moves from a warmer object to a cooler object.
remains constant
Work
lever
a simple machine has one machine and a complex machine has two or more machines
baseball bat
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