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14 Cards in this Set
- Front
- Back
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WORK
What is a force? |
A force is either a push or a pull
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WORK
What is related to force and motion? |
Work
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WORK
Complete this statement. Work is defined as: force x distance = work. In this formula, force is equal to the _______ __ ___ ____. |
weight of the load
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WORK
Complete this statement. Work is increased in two ways: an increase in the ________ of the load and an increase in the _______ moved. |
weight
distance |
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FRICTION
Why does friction occur? |
Friction occurs because no surface is perfectly smooth.
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FRICTION
Name two ways that friction is helpful. |
Friction allows us to slow down a car, grab an object, and stop when we are running.
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FRICTION
How do basketball shoes help a player stop? |
The shoes create friction with the floor and allow the player to stop.
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FRICTION
Name two ways to decrease friction. |
Friction can be decreased in two ways: lubrication and wheels.
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WEDGES
What kind of wedge is used to turn soil in the fields? |
A plow uses a group of wedges to create furrows in soil
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Give two examples of tools that help us to complete work.
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Can opener, hammer, car jack, ax chop down a tree
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TOOLS
What is input force.? |
Input force is the amount of force exerted on a machine
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TOOLS
What is output force? |
Output force is the force exerted on a load by a machine
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INCLINED PLANE
What kind of surface is an inclined plane? |
An inclined plane is a slanted surface
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INCLINED PLANE
What does an inclined plane do to force? |
It magnifies force
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