Equations Flashcards

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1
Q

weight, mass and gravitational field strength

A

Mass x GPE

W= m x g

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2
Q

work done, force and distance

A

Force x distance along the line of actiom

W = f x s

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3
Q

Name equation that links moments, force and distance

A

Force x distance normal to direction of force

M = f x d

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4
Q

Pressure and force normal to a surface

A

Pressure = force normal to a surface

F

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5
Q

Speed, distance, time

A
Distance = speed x time
S = v x t
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6
Q

Acceleration =

A

Change in velocity

TRIANGLE v

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7
Q

Force applied to a spring =

A

Spring constant x extension

F = ke

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8
Q

Resultant force =

A

Mass x acceleration

F = m x a

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9
Q

Momentum =

A

Mass x velocity

P = m x v

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10
Q

Kinetic energy =

A

0.5 x mass x speed 2

Ek = 1/2 x m x v2

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11
Q

GPE =

A

Mass x field strength x height

Ep = m x g x h

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12
Q

Power (energy) x 2

A

Energy transferred

Work done

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13
Q

Efficiency =

A

Useful (power) output / total (power) input

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14
Q

Wave speed =

A

Frequency x wavelength

V = f x lambda

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15
Q

Charge flow =

A

Current x time

Q = I x t

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16
Q

Potential difference =

A

Current x resistance

V = I x R

17
Q

Power (electricity) x 2

A

Potential difference x current
P = V x I

Current 2 x resistance
P = I squared x R

18
Q

Energy transferred x 2

A

Power x time
E = P x t

Charge flow x PD
E = Q x V

19
Q

Density =

A

Mass

P = m