Year 3 Flashcards by Hoi Yan Wan | Brainscape

Q

Formula for Density

A

Density = mass/volume

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Q

Formula for weight

A

W=mg (g = 9.81)

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Q

Formula for Speed

A

S=Distance/time

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Q

Formula for Acceleration

A

a=(v-u)/t

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Q

Formula for Force

A

F = ma

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Q

Hooke’s Law

A

W oc e
W = ke
k = W/e (where k is the spring constant)

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Q

Formula for momentum

A

p = mv (unit: kgms-1)

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Q

Formula for Impulse

A

I=F x t
= m(v-u)

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Q

Formula for Moment

A

Force x Perpendicular Distance

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Q

Formula for pressure

A

P=F/A

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Q

Formula for energy

A

Force x Parallel Distance

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Q

Formula for Kinetic Energy

A

1/2 mv^2

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Q

Formula for Potential Energy

A

E = mgh

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Q

Efficiency

A

work done/energy input

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Q

Power

A

Energy/time

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Q

Boyle’s Law

A

P1V1 = P2V2

Q

Formula for Specific Heat Capacity

A

Q = mcø

Q

Formula for Wave Speed

A

v=fλ

Q

Formula for Wave Frequency

A

F=1/T

Q

Formulas for Refractive Index:

A

1/sin C
sin i/sin r
V/vm
real depth/apparent depth