Simple Machines  - Tools used to make work easier, Work - A force acting on an object to move it across a distance, Force - Any push or pull that causes an object to change its position, direction, or shape, Simple Harmonic Motion - An object moving in a non-complex periodic way, Pendulum - A body suspended from a fixed point so that it can swing back and forth under the influence of gravity. under the influence of gravity, Gravity - The attraction between two masses, such as the earth and an object on its surface, Friction - The force that resists motion through the rubbing of one object against another,

Simple Machines

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