Impulse from momentum change
A cart in a wind-tunnel trolley trace has mass \(0.6\,\text{kg}\) and changes speed from \(4\,\text{m s}^{-1}\) to \(9\,\text{m s}^{-1}\). Calculate the impulse. 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.