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14 Cards in this Set

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WORK

What is a force?
A force is either a push or a pull
WORK


What is related to force and motion?
Work
WORK

Complete this statement. Work is defined as: force x distance = work. In this formula, force is equal to the _______ __ ___ ____.
weight of the load
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
FRICTION


Why does friction occur?
Friction occurs because no surface is perfectly smooth.
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.
FRICTION

How do basketball shoes help a player stop?
The shoes create friction with the floor and allow the player to stop.
FRICTION

Name two ways to decrease friction.
Friction can be decreased in two ways: lubrication and wheels.
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
Give two examples of tools that help us to complete work.
Can opener, hammer, car jack, ax chop down a tree
TOOLS
What is input force.?
Input force is the amount of force exerted on a machine
TOOLS

What is output force?
Output force is the force exerted on a load by a machine
INCLINED PLANE

What kind of surface is an inclined plane?
An inclined plane is a slanted surface
INCLINED PLANE

What does an inclined plane do to force?
It magnifies force