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10 terms

Simple Machines

Chapter 8, Lesson 1 and 2
STUDY
PLAY
force
push or pull
motion
caused by a force
work
applying a force to move an object through a distance
effort
the force that does work
gravity
the force that pulls all things toward the center of the earth
friction
a force that resists motion between two things that rub against each other, makes objects stop
inertia
causes all matter that is moving to stay in motion, causes all matter that is not moving to say at rest unless a force acts on it
resistance
object moved by the effort
simple machines
used to make work easier, reduces the amount of effort needed
amount of work
depends on the amount of force and the distance moved