Velocity and acceleration

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Description and Tags

Physics

Kinematics & Dynamics

GCSE Physics

CCEA

Motion

9th

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7 Terms

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Displacement

the distance an object moves, measured in a straight line from the start point

<p>the distance an object moves, measured in a straight line from the start point</p>
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Velocity

The speed of an object in a particular direction

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The equation linking average velocity, displacement and time

Average velocity = displacement Ă· time

<p>Average velocity = displacement Ă· time</p>
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The equation linking average velocity, initial velocity and final velocity

Average velocity = (initial velocity + final velocity) Ă· 2

<p>Average velocity = (initial velocity + final velocity) Ă· 2</p>
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Acceleration

The rate of change of velocity or the amount that velocity changes per unit time

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The equation linking acceleration, final velocity, initial velocity and time

Acceleration = (final velocity – initial velocity) ÷ time

<p>Acceleration = (final velocity – initial velocity) ÷ time</p>
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Retardation

When an object is slowing down and its acceleration has a negative value