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1

Acceleration

Change in velocity divided by change in time

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2

Average Speed

Total Distance / Total time

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3

Weight

mass x gravitational field strength

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4

Force

mass x acceleration

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5

Moment

Force x perpendicular distance from the pivot

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6

Electrical Power

Current x Voltage

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7

Energy Transferred

Current x Voltage x Time

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8

Charge

Current x Time

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9

Wave Speed

Frequency x Wavelength

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10

Efficiency

useful energy output / total energy input x 100

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11

Work Done

force x distance moved in direction of force

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12

Power

Work Done /Time Taken or energy transferred /time taken

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13

GPE

m x g x h

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14

KE

1/2 x mass x speed squared

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15

Density

Mass / Volume

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16

Pressure

Force / Area

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17

Pressure difference

height x density x g

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18

Momentum

mass x velocity

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19

Energy Transferred 2

Work done

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20

voltage

current x resistance

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21

input voltage / output voltage

primary turns / secondary turns

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22

input power

output power

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23

Breaking Distance

(½ x mass x velocity²) / Breaking force

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24

Thinking Distance

speed of car x reaction time of drivers

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25

stopping distance

thinking distance + breaking distance

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26

** Specific latent heat **

**energy required / mass**

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