Terms & Definitions in Circular Motion 3.0 / 5 based on 1 rating ? PhysicsCircular motionA2/A-levelCIE Created by: K.T.1998Created on: 05-09-16 14:22 Angular Displacement (θ) The angle through which the object has moved in a circle. 1 of 6 Displacement (s) The distance it has travelled from its starting position. 2 of 6 Radian The angle subtended at the centre of a circle by an arc length equal to the radius of the circle. 3 of 6 Angular Velocity (w) The rate of change of the angular position of an object as it moves along a curved path. 4 of 6 Centripetal Force (F) The resultant force acting on an object moving in a circle; it is always directed towards the centre of the circle. 5 of 6 Orbital Speed (v) The speed an object must have to orbit under gravity. 6 of 6
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