Conservation of Momentum in Inelastic Collision Steps:

• Identify the collision as perfectly inelastic since objects stick together.
• Apply conservation of momentum: total initial momentum equals total final momentum.
• Initial momentum: $m u + 5m v$.
• Final momentum: $6m \times w$, where $w$ is the common speed.
• Solve for $w$: $w = \frac{u + 5v}{6}$.

Not enough information: The expression depends on both $u$ and $v$, but no relation between them is given, so none of the options can be selected definitively.

Final answer: Not enough information.