
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given a cart of mass  $m$  moving at  $12 \text{ m/s}$  to the right and a cart of mass  $4.0 \text{ kg}$  originally at rest, determine the velocity of the center of mass ( $v_{\text{cm}}$ ) of the two carts before the collision.

Present the answer in LaTex format: \boxed{Your answer}
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