Unit 1 - Module 1 DEFINITIONS - Flashcards in A Level and IB Physics

Scalar quantity

Has a magnitude but no direction eg. distance, speed, pressure, power

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Vector quantity

Has both a magnitude and a direction eg. displacement, velocity, acceleration, force

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Speed

=distance/time; the gradient of a distance-time graph

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Velocity

Speed with a known direction; displacement per unit time; the gradient of a displacement-time graph

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Displacement

Distance moved in a stated direction; the distance travelled from the starting point; area underneath a velocity-time graph

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Acceleration

=(v-u)/t; rate of change of velocity; the gradient of a velocity-time graph

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Instantaneous speed

The speed at a given instant of time

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Average speed

The average speed across the whole journey taken

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Other cards in this set

Has both a magnitude and a direction eg. displacement, velocity, acceleration, force

Vector quantity

=distance/time; the gradient of a distance-time graph

Speed with a known direction; displacement per unit time; the gradient of a displacement-time graph

Distance moved in a stated direction; the distance travelled from the starting point; area underneath a velocity-time graph

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