The change in the displacement of a body per unit time
i. Velocity
ii. Speed
iii. Acceleration
iv. Uniform motion
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The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time
Speed is the distance traveled per unit of time. It is how fast an object is moving. Speed is the scalar quantity that is the magnitude of the velocity vector.
acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
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