The velocity of an object is its change in position per unit time

The velocity of an object is its change in position per unit time

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The velocity of an object is its change in position per unit time, and is hence usually given in units such as m/s (meters per second) or km/hr (kilometers per hour). The velocity function, v(t) , of an object will give the object's velocity at each instant in time just as the speedometer of a car allows the driver to see how fast he is going. The value of the function v at a particular time t 0 is also known as the
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Unformatted text preview: instantaneous velocity of the object at time t = t , although the word "instantaneous" here is a bit redundant and is usually used only to emphasize the distinction between the velocity of an object at a particular instant and its "average velocity" over a longer time interval. (Those familiar with elementary calculus will recognize the velocity function as the time derivative of the position function.)...
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