# UNIFORM ACCELERATION

Jun 17th, 2015
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Uniform acceleration occurs when the speed of an object changes at a constant rate. The acceleration is the same over time. By relating acceleration to other variables such as speed, time and distance we are able to manipulate data in many ways.

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UNIFORM ACCELERATION Uniform acceleration occurs when the speed of an object changes at a constant rate. The acceleration is the same over time. By relating acceleration to other variables such as speed, time and distance we are able to manipulate data in many ways. We have a small set of very powerful formulae which can be combined to obtain results despite unknown variables. The Formulaea = ( Vf - Vi ) / t This is the formula for the average acceleration, which is our actual acceleration when dealing with uniform acceleration. Average acceleration equals to the difference in speed over time. When we have two speeds we can calculate the acceleration during the time interval, t, by subtracting the initial speed from the final speed ( we get the change in speed ) and then dividing by the time to get the acceleration. Acceleration = increase in speed / time d = 1/2 ( Vf + Vi ) t This formula is a favourite of mine. It stems from analyzing the graph of speed V.S. time of an object's motion. Since speed = distance / time we can calculate the distance ( or displacement ) an object by measuring the area under the line which represents speed. The derivation of this formula is quite simple. Using the FormulaeYou now know two formulae that relate the initial speed, Vi, the final speed, Vf, the distance, d, the acceleration, a and the time, t.When you are solving a problem where you need to find one of these variables but you are lacking another one, you should combi

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