Explain why repeated measurements improve reliability.

In the subtopic Required practical: acceleration, this learning objective focuses on explain why repeated measurements improve reliability. For AQA GCSE Physics 8463 Unit 4.5 Forces, keep the explanation inside Required practical: acceleration and Forces and motion. Approved keywords for this objective include repeat. A strong answer separates scalar and vector quantities, uses correct units where quantities are involved, and links the physical reasoning back to explain why repeated measurements improve reliability. This is not a generic revision point: it is specifically about Required practical: acceleration, Forces and motion, and the approved wording of the learning objective.