Acceleration (AQA GCSE Physics Combined Science): Flashcards

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Acceleration
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Definition of acceleration

Change of an object's velocity over a given time

Formula for acceleration

a=change in velocitytimea = \frac{\text{change in velocity}}{\text{time}}

Horizontal line on velocity-time graph

Constant velocity

Upward slope on velocity-time graph

Acceleration

Downward slope on velocity-time graph

Deceleration

Gradient of velocity-time graph represents

Acceleration of the object

Area under velocity-time graph represents

Distance travelled in a specific direction (displacement)

Curved lines on velocity-time graph indicate

Acceleration is not constant

Equation for constant acceleration

v2=u2+2asv^2 = u^2 + 2as

vv in equation v2=u2+2asv^2 = u^2 + 2as

Final velocity

uu in equation v2=u2+2asv^2 = u^2 + 2as

Initial velocity

Initial acceleration of falling objects on Earth

Around 9.8 m/s29.8 \text{ m/s}^2

Cause of acceleration of falling objects

Force of gravity

Air resistance definition

Upward force of friction with air particles

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