Order-of-magnitude estimation
What Order-of-magnitude estimation means in Physics GCSE, as defined for OCR.
Definitions of Order-of-magnitude estimation
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Reference: OCR
Values far above 10 m/s² for ordinary road travel are unrealistic, while gentle public transport is near or below 1 m/s².
Attaching a benchmark value to familiar moving things, so that a value wildly outside the band signals a wrong choice.
Topics that use Order-of-magnitude estimation
- Physics on the move (OCR GCSE)
Related terms
- braking distance
- Everyday transport speeds
- Experimental method
- force
- Rate equations and unit consistency
- Rate of change of velocity
- reaction time
- Resultant force
Using Order-of-magnitude estimation in the exam
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