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Position and Motion
Chapter 11 Salamander Class
Term | Definition |
---|---|
simple machine | a tool that changes the size or direction of a force, makes work easier |
lever | a bar that moves against an unmoving point, a shovel or seesaw |
fulcrum | the unmoving point that a lever moves againt |
ramp | a simple machine used to move a heavy object, its surface is slanted |
gravity | a force that pulls down on everything on Earth |
friction | a force that slows down moving things, when 2 things rubs together |
force | a push or pull |
speed | how far something moves in a certain amount of time |
position | where something is in relation to other objects |
motion | a change in the position of an object |