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Chapter 2: Accelerated motion

What is acceleration and how is it calculated?

Acceleration is the rate of change of velocity with respect to time
Because velocity is a vector quantity it also means that acceleration is a vector quantity
If an object is moving with constant speed but is changing…

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Deducing displacement

Simply work out the area underneath the graph to work out the displacement of the object
For curved graphs you can just count the squares or integrate

Determining velocity and acceleration in the laboratory

One light gate (method 1)
Attach a bit of card to the object (in…

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Equation 1: v = u + at

Equation 2: s = (u +v)t / 2

Equation 3: s = ut + (at^2)/2

Equation 4: v^2 = u^2 + 2as

Equation 5: s = vt ­ (at^2)/2

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Deriving the equations of motion

Equation 1: derived directly from the acceleration equation
Equation 2: derived directly from the average speed equation, where (u + v)/2 = average speed
Equation 3: Using the area underneath the graph we can work the out the sum of the displacements
Equation 4: derived…


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