Sticking collision final speed
In a school lift model, a \(1.6\,\text{kg}\) cart moving at \(7\,\text{m s}^{-1}\) sticks to a stationary \(1.5\,\text{kg}\) cart. Calculate their common speed after collision. Identify the force, momentum, or energy relationship before entering the result. 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.