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Statement of a problem № 3

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A car starts moving rectilinearly, first with acceleration w = 5.0 m/s2 (the initial velocity is equal to zero), then uniformly, and finally, decelerating at the same rate w, comes to a stop. The total time of motion equals τ = 25 s. The average velocity during that time is equal to = 72 km per hour. How long does the car move uniformly?

Solution:
A car starts moving rectilinearly, first with acceleration w = 5.0 m/s2 (the ini

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