Acceleration (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards

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Acceleration
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Definition of acceleration

Change of an object's velocity over a given time

Acceleration formula

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 shows

Acceleration of the object

Area under velocity-time graph represents

Distance in specific direction (displacement)

Curved lines on velocity-time graph mean

Acceleration is not constant

Constant acceleration equation

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

Initial acceleration of falling objects on Earth

Around 9.89.8 m/s²

Cause of falling object's acceleration

Force of gravity

Air resistance

Upward force of friction with air particles

Air resistance effect on falling skydiver

Eventually balances force due to gravity

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