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# L02b - Physics 111 Lecture 2b"Your education is ultimately...

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1 / 8 Physics 111 Lecture 2b “Your education is ultimately the flavor left over after the facts, formulas and diagrams have been forgotten.” –Paul G. Hewitt

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Constant acceleration Constant a Kinematics Question Examples Practice problems 2 / 8 Kinematics is the study of motion The set of equations that describe the motion of an object are known as kinematics equations Motion on a straight line with constant acceleration: a = constant (1) An object starts with an initial velocity v 0 at t = 0 and accelerates with a constant acceleration a From Eq. (1), we get our first kinematics equation: v = v 0 + at (2)
Constant acceleration Constant a Kinematics Question Examples Practice problems 3 / 8 Now let’s take a look at the definition of v avg assuming a is constant and we start at t = 0 v avg = x - x 0 t (3) By looking at the graph (see the board): v avg = v 0 + v 2 (4) By using Eqs. (2), (3) and (4), we get the second kinematics equation: x = x 0 + v 0 t + 1 2 at 2 (5)

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Constant acceleration Constant a Kinematics Question
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L02b - Physics 111 Lecture 2b"Your education is ultimately...

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