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9 Cards in this Set

  • Front
  • Back
a push or a pull
force
the force between two moving objects that tries to keep the objects from moving freely
friction
the pulling force between two objects
gravity
the measure of how fast something moves
speed
a change in position; movement
motion
the measure of force it takes to move an object; the amount of energy used to move something
work
a tool that makes a job easier to do
simple machine
a flat surface set at an angle to another surface
inclined plane
a bar that moves on or around a fixed point
lever