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
- Use UNITS in Q (or other info) to write down a formula
- Create BLUE TRIANGLE:
e.g. for Speed, Distance and Time
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
Edexcel GCSE Maths Notes
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