Key term for OCR GCSE Physics A, used in Motion.
A card of known length attached to a moving object, used to block the beam of a light gate for a measurable amount of time.
Flag (interrupter card) appears in OCR GCSE Physics A revision content for Forces, especially Motion and Calculating speed.
Create a free account to access OCR GCSE Physics A revision notes, track progress, and practise related key terms.
