Local acceleration from tangent gradient
A tangent on a velocity-time graph from a wind-tunnel trolley trace changes from \(10\,\text{m s}^{-1}\) to \(16\,\text{m s}^{-1}\) across \(2.6\,\text{s}\). Estimate the instantaneous acceleration. Enter the numerical result and choose the interpretation that matches the physics meaning.
Worked practice: physics data and result
Read the physical quantities first, then calculate the result and state what it means.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.