Sticking collision final speed
In a bike trailer investigation, a \(1\,\text{kg}\) cart moving at \(4\,\text{m s}^{-1}\) sticks to a stationary \(1.75\,\text{kg}\) cart. Calculate their common speed after collision. Enter the numerical result and choose the interpretation that matches the mechanics 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.