Equations - Paper 2 Flashcards by Mr Kent | Brainscape

Q

Pressure?

A

Force / area

P = F/A

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Q

Distance travelled?

A

Speed x time

S = v t

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Q

Acceleration?

A

Change in velocity / time taken

a = v - u / t

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Q

Wave speed?

A

Frequency x wavelength

V = f a

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Q

Period?

A

1 / frequency

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Q

Newton’s 2nd Law?

A

Acceleration = force / mass

a = F / m

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Q

Weight?

A

Mass x gravitational field strength

w = m g

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Q

Work done?

A

Force x distance moved

W = F D

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Q

Hooke’s law?

A

Force = spring constant x spring extension

F = k e

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Q

Efficiency?

A

Useful energy / Energy put in x100

E= useful/input x100

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Q

Velocity²?

this is on the formula sheet

A

Initial velocity² + 2 x Acceleration x Displacement

v²=u²+2as

(this is on the formula sheet)

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Q

Elastic potential energy?

this is on the formula sheet

A

1/2 x Spring constant x Extension²

Ee=1/2ke²

(this is on the formula sheet)

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Q

Momentum?

A

Mass x Velocity

m = m x v

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Q

Force (in terms of momentum)?

this is on the formula sheet

A

Change in momentum / time taken

F = ΔP / Δt

(this is on the formula sheet)

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