A car starts moving rectillinearly, first with acceleration \(w = 5\text{ m/s}^{2}\) with the initial velocity 0, then uniformly, and finally decelerating at the same rate \(w\), comes to stop.The total time of motion is 25 seconds. The average velocity during that time of \(72 \text{ km/hr}\). How long does the car move uniformly?

Provide your answer in seconds.

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