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Review sheet on Kinematics in One Direction: Displacement and Distance, Acceleration, Kinematic Graphs, Velocity and Speed, Kinematic Equations.
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Displacement and Distance Displacement- vector extending from object's initial position to its final position Distance- scalar quantity representing the actual path followed by an object Distance equals displacement when the object travels in a straight line and does not reverse its direction Velocity and Speed Velocity- vector describing the rate of displacement average velocity = displacement/time Instantaneous velocity- velocity at a specific time Speed- scalar calculating the rate of distance average speed = distance/time If an object travels in a straight line, then speed and velocity are interchangeable Acceleration Acceleration- rate of change of velocity acceleration = change in velocity/time Uniform acceleration- magnitude remains constant; constant acceleration- magnitude and direction are constant If acceleration acts in the same direction as velocity: speed increases If acceleration acts in the opposite direction as velocity: speed decreases If acceleration acts perpendicularly to velocity: direction changes The acceleration of gravity is 10 m/s Kinematic Equations vf = vi + 2ax vf = vi + at x = vi*t + 0.5at v=x/t or x=vt Kinematic Graphs GRAPH SLOPE AREA Position (or distance) v. time Velocity N/A Velocity v. time Acceler ation Displacement (change in position) Acceleration v. time N/A Change in velocity By leahboyd cheatography.com/leahboyd14/ Published 31st July, 2018. Last updated 31st July, 2018. Page 1 of 1. Sponsored by Readability-Score.com Measure your website readability! https://readability-score.com 2 2 2 2