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Force & Motion

motion A change in an object's position as compared to objects around it
speed A measure of distance an objects travels in a certain amount of time
position An object's location
velocity A measure of speed in a certain direction
force A push that moves an object away or a pull that moves an object nearer
friction A force that slows or stops motion between two surfaces that are touching
gravity The force that pulls bodies or objects towards other bodies or objects
simple machine A device that changes a force
wheel & axle A simple machine made up of two cylinders that turn on the same axis
inclined plane a simple machine made up of a slanted surface
lever a simple machine made up of a stiff bar that moves freely aroung a fixed point
pulley a simple machne made up of a rope fitted around the rim of a fixed wheel
screw a simple machine made up of an inclinded plane wrapped around a column
wedge a simple machine made up of two inclined planes
Created by: ctabor