Physics Flashcards

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1
Q

Speed

A

Total distance/total time

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2
Q

Velocity

A

Total distance/total time

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3
Q

Acceleration

A

Change in velocity/time taken

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4
Q

Speed on distance time graph

A

Rise/run

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5
Q

Distance on speed time graph

A

Area beneath the graph

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6
Q

Weight

A

Mass x 10

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7
Q

Force (N)

A

Mass(kg) x acceleration (m/s)

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8
Q

Mass

A

Weight/10

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9
Q

Acceleration in the context of forces

A

Forcé /mass

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10
Q

Acceleration in the context of forces

A

Forcé /mass

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11
Q

Hooke’s law

A

Force = k x
K: spring constant
X: extension

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12
Q

Moment (Nm)

A

Force x distance

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13
Q

Pressure (Pa)

A

Force/area

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14
Q

Work (J)

A

Force x distance

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15
Q

Kinetic energy (KE)

A

1/2 mass x velocity^2

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16
Q

Gravitational potential energy (G.P.E)

A

mass x gravity x height

17
Q

Energy input/output

A

Efficiency= useful energy output/ energy input x100%

18
Q

Power input/output

A

Efficiency= useful power output/ power input x100%

19
Q

Power

A

Work/time

20
Q

Temperature

A

Pressure x volume

21
Q

Wave speed

A

Frequency x wavelength

22
Q

Refractive index

A

Sin i/ sin r

23
Q

Electric current

A

Charge/time

24
Q

Current

A

Voltage/ resistance

25
Q

Resistance

A

Voltage/ current

26
Q

Combined resistance

A

1/total resistance= 1/R1 + 1/R2 + 1/R3

27
Q

Electrical power

A

Current x voltage

28
Q

Energy

A

Current x voltage x time

29
Q

Density

A

Mass/volume