A0W0N
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im stuck on this question and really need help to keep on top of all my work I would really appreciate any help as i have a lot of work to do and not much help when need it due to schools being closed
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A0W0N
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https://www.thestudentroom.co.uk/sho....php?t=6425026

I still haven't got a reply and i need to do more work please help me it only one sub question
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Chris2892
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check your units are in SI
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A0W0N
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(Original post by Chris2892)
check your units are in SI
SI?
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Chris2892
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(Original post by A0W0N)
SI?
It’s the standard unit for calculations.
You should always start every problem by checking the units are in SI form I.e. length in metres, weight in kg.
Otherwise, your answer will be in units that may not match the answer they’ve given you.

You can work out what the units of your answer is by removing the numerical parts of your equation but keeping your units.
For example
F*M/A = N * (kg/(m/s^2)) = kg^2

Because you can also write N as kg (m/s^2), all you’re left with is kg^2

If you’re not converting and working in standard units, your answer won’t be in standard units.

I used WolframAlpha throughout university as a calculator. You can include the units and it will give you the units for the answer.
I’d recommend trying to convert these yourself though
Last edited by Chris2892; 1 year ago
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