Challenge: The braking-distance rule of thumb: (speed:10)² : 2
Most learners calculate: '80 divided by 10 is 8, squared is 64... no wait, 32 metres?' Half of them forget one step in the formula — and that step is exactly what the CBR exam designer counts on. The book does not give a bare square. It gives a square, divided by 2.
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All sections of this topic
- The model: The braking-distance rule of thumb: (speed:10)² : 2
- Core: The braking-distance rule of thumb: (speed:10)² : 2
- Why it matters: The braking-distance rule of thumb: (speed:10)² : 2
- Active recall: The braking-distance rule of thumb: (speed:10)² : 2
- Teach back: The braking-distance rule of thumb: (speed:10)² : 2
- Memory hook: The braking-distance rule of thumb: (speed:10)² : 2