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toc =**Definitions**=

Centripetal Force: Force that causes an object to follow a circular path Circular Motion: the movement of an object at costant speed around a circle with fixed radius Axis: Straight line around which rotation takes place Rotation:Object turns around on external axis Tangential speed: is radial distance times the rotational speed Coulombs law: the relationship among electrical forces, charges, and distance Electric Potential Diference: Causes Charges to Move Grounding:Touching a body to earth to excess charges Electric Current: Flow of Charges particals

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=**Physics images**=

=**Importain Facts**=

Rotational Speed- number of rotations Per unit of time Tangential speed is radial distace times the rotational speed Centripetal force- Force that causes an object to follow a circular path Formula for Centripetal force- the velocity square divided by the radius Universal Gravitation and Distance- As the distance seperating two object increases, the force of attraction is exponentially smaller Universal Gravitation and Mass- As the mass of either object or both object increases, the force of gravitational attraction increases = = =**Acceleration Video**=

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