
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
A car starts accelerating from rest, and within 5 seconds, the relationship between its velocity $v$ (in meters per second) and time $t$ (in seconds) is approximated by the function $v=f(t)=-t^2+10t$. Find the acceleration of the car at the moment $t=1$ second.

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