Grade six, Edexcel GCSE Maths

Revision Notes

What connects speed, density & pressure?

Speed, Density and Pressure are all examples of variables which are calculated by dividing one thing by another:

Speed = Distance ÷ Time

Density = Mass ÷ Volume

Pressure = Force ÷ Area

In that respect they can all be treated in the same way.

Doing speed, density & pressure questions

  1. Use UNITS in Q (or other info) to write down a formula
  2. Create BLUE TRIANGLE:

         e.g. for Speed, Distance and Time

speed-triangle, IGCSE & GCSE Physics & Maths revision notes

3. For each part of the Q write down

  • what you know
  • what you want to know

4. Use Blue Triangle to REARRANGE formula (if necessary)

5. SUBSTITUTE numbers and SOLVE

Example

Question

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Edexcel GCSE Maths Notes

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