Acceleration (OCR GCSE Physics A (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 means

Constant velocity

Upward slope on velocity-time graph means

Acceleration

Downward slope on velocity-time graph means

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

Initial acceleration of falling objects

9.8 m/s29.8 \text{ m/s}^2

Cause of initial acceleration of falling objects

Force of gravity

Air resistance definition

Upward force of friction with air particles

When air resistance balances gravity

After some time falling, when the forces balance

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