# Physics formulas GCSE

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I have to learn 30 physics formulas for my exams!!! Does anyone have any tips for how to memorise them?

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#2

Is it really 30, or do some of them count as rearrangements? F=MA Is the same as A = F/M is the same as M = F/A for example?

Anyway!

The trick to physics is that they usually (well they did 10 years ago) have the answer place as <Blank> (Required units) so _______ms^-1

In order for you to the solve the question, each part will have a unit.

So Distance = m

Time = s

Speed (which they would be wanting in this case) ms^-1

It takes 20 seconds to travel 40 metres.

What speed did I travel?

You are given s and m. The answer will say _________ms-1

So you know that you achieve this by taking m and dividing by s.

Speed = Distance / time

ms^-1 = m / s

While this is a trivial example, look at your questions, you will see that you can work out what is required, based on the required units of the answer.

This is the technique I applied to short cut questions, hopefully this is useful advice for you. =)

Anyway!

The trick to physics is that they usually (well they did 10 years ago) have the answer place as <Blank> (Required units) so _______ms^-1

In order for you to the solve the question, each part will have a unit.

So Distance = m

Time = s

Speed (which they would be wanting in this case) ms^-1

It takes 20 seconds to travel 40 metres.

What speed did I travel?

You are given s and m. The answer will say _________ms-1

So you know that you achieve this by taking m and dividing by s.

Speed = Distance / time

ms^-1 = m / s

While this is a trivial example, look at your questions, you will see that you can work out what is required, based on the required units of the answer.

This is the technique I applied to short cut questions, hopefully this is useful advice for you. =)

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#3

I'd make lots of flash cards with each one on, then you can test yourself and practice.

Another way to approach it is learn definitions of quantites in terms of words like: speed is how far you go in a certain time so you then know it is distnace/time

Don't know if that helps at all, but hope it does!

Another way to approach it is learn definitions of quantites in terms of words like: speed is how far you go in a certain time so you then know it is distnace/time

Don't know if that helps at all, but hope it does!

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#4

Here's how I've progressively learnt every formula I needed:

Just write them down for every question.

You'll get sick at the sight of them, but you'll remember them.

Just write them down for every question.

__Every single time.__Write V = IR every time. Write F = BIL every time. E = VQ. Every single time you do the question, write out the formula.You'll get sick at the sight of them, but you'll remember them.

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#5

Writing them down for every practice question is good advice. But also, you should try and learn what units are. That would help you the most and will also impress your teachers since you're only doing GCSEs now.

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#6

Yeah, you should also remember the units like optalk said. In a calculation question, along with the answer, they may ask you the unit of an "obscure" measurement like spring constant (which is N/m), moment (Nm), density, specific heat capacity, momentum (kg m/s), etc.

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#7

(Original post by

Yeah, you should also remember the units like optalk said. In a calculation question, along with the answer, they may ask you the unit of an "obscure" measurement like spring constant (which is N/m), moment (Nm), density, specific heat capacity, momentum (kg m/s), etc.

**Anthos**)Yeah, you should also remember the units like optalk said. In a calculation question, along with the answer, they may ask you the unit of an "obscure" measurement like spring constant (which is N/m), moment (Nm), density, specific heat capacity, momentum (kg m/s), etc.

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#8

(Original post by

I thought they only asked questions on base units for A - Level but that's even more of a reason to learn units. Two birds with one stone.

**optalk**)I thought they only asked questions on base units for A - Level but that's even more of a reason to learn units. Two birds with one stone.

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#9

(Original post by

Not sure about A Level. In the 2018 AQA Physics P2, they asked you to provide the unit for pressure (which I think was Pa, but N/m^2 was also accepted).

**Anthos**)Not sure about A Level. In the 2018 AQA Physics P2, they asked you to provide the unit for pressure (which I think was Pa, but N/m^2 was also accepted).

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#10

**Anthos**)

Yeah, you should also remember the units like optalk said. In a calculation question, along with the answer, they may ask you the unit of an "obscure" measurement like spring constant (which is N/m), moment (Nm), density, specific heat capacity, momentum (kg m/s), etc.

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#11

(Original post by

I don't see why you'd need to specifically revise the units. If they know the formulas, they can just get the units from them. In my view that's a lot easier.

**_gcx**)I don't see why you'd need to specifically revise the units. If they know the formulas, they can just get the units from them. In my view that's a lot easier.

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#12

(Original post by

It's compulsory with OCR. You can pick up marks for deriving units.

**optalk**)It's compulsory with OCR. You can pick up marks for deriving units.

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#13

For me personally flash cards do not work in helping me memorise formulae. Whilst it is still useful to have them and look at them at time when your brain has a better chance at remembering them e.g. right before you go to sleep and them once again in the morning , I would suggest other methods alongside it.

Firstly before an exam, you could attempt lots of practise questions and always write down the formulas when you use them. Also, you could write them down and try to rearrange them to see which format you best remember them. (You could remember them best as formula triangles)

Right before an exam (for short term memory) you could keep writing down the formulas on a sheet of paper over and over again so when you get into the exam you can turn your paper to the back and write them all down whilst they're in your head.

Whilst in an exam you may get a formula question where you are given some information such as the units for the answer. In most cases the units are the formula! For example the formula for density=mass/volume and the units are g/cm3 or kg/m3 (the / standing for divide if you use this technique).

Another thing in the exam, if you are really struggling to remember an equation, is that in most formulas for energy everything on the other side is multiplied. E.g. KE= 0.5 x m x v^2. And GPE= m x g x h.

Hope this helps!

Firstly before an exam, you could attempt lots of practise questions and always write down the formulas when you use them. Also, you could write them down and try to rearrange them to see which format you best remember them. (You could remember them best as formula triangles)

Right before an exam (for short term memory) you could keep writing down the formulas on a sheet of paper over and over again so when you get into the exam you can turn your paper to the back and write them all down whilst they're in your head.

Whilst in an exam you may get a formula question where you are given some information such as the units for the answer. In most cases the units are the formula! For example the formula for density=mass/volume and the units are g/cm3 or kg/m3 (the / standing for divide if you use this technique).

Another thing in the exam, if you are really struggling to remember an equation, is that in most formulas for energy everything on the other side is multiplied. E.g. KE= 0.5 x m x v^2. And GPE= m x g x h.

Hope this helps!

(Original post by

I have to learn 30 physics formulas for my exams!!! Does anyone have any tips for how to memorise them?

**addywbu**)I have to learn 30 physics formulas for my exams!!! Does anyone have any tips for how to memorise them?

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#14

Practice writing and deriving them all.

A good way to live is to not accept a formula unless you can derive it, even in the simplest case. If it's beyond what you know at the moment, just look at the derivation, that usually helps you recollect where stuff comes from and helps you memorise them.

Honestly just repetition is the best way.

A good way to live is to not accept a formula unless you can derive it, even in the simplest case. If it's beyond what you know at the moment, just look at the derivation, that usually helps you recollect where stuff comes from and helps you memorise them.

Honestly just repetition is the best way.

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#16

(Original post by

do we need to know the specific heat capacities for certain materials

**Jamal77**)do we need to know the specific heat capacities for certain materials

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(Original post by

do we need to know the specific heat capacities for certain materials

**Jamal77**)do we need to know the specific heat capacities for certain materials

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