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### 14 Cards in this Set

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 Number of rotations or revolutions made per unit of time. Rotational Speed Pulls objexts toward a center; Object moving in a circle has this force acting on it. Centripetal Force When an object moves in a circle, is there a force pushing the object outward from the circle? No Minimum speed you can use to get the object to go into a circular motion. Critical Velocity Going in the same number of revolutions in an amount of time Uniform Speed Rotation around an axis Rotary Motion Angle formed by radius along the ark and the other radius; 57.3 degrees; 6.28 of them in a circle Radian The straight line around which an object may rotate or revolve Axis An apparent outward force on a rotating or revolving body. It is fictitious to the sense that it is not part of an interaction but is due to the tendency of a moving body to move in a straight line. Centrifugal Force The path distance moved per unit of time. Also called simply speed. Linear speed Motion of an object turning around an axis outside an object. Revolution The spinnning motion that takes place when an object rotates about an axis located within the object. Rotation The number of rotations or revolutions per unit of time; often measured in rotations or revolutions per second or per minute ratational speed The speed of an object moving along a circular path tangential speed