# Time to warm up!

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?