Initial data: the equation of motion of a point (the law of speed change) V (t) = 2 + 5 * t; t (considered moment of time) = 5 s.
To determine the instantaneous speed, we substitute the value of the variable t into the given equation of motion: V (5) = 2 + 5 * 5 = 2 + 25 = 27 m / s.
Answer: The instantaneous speed of a point in 5 s is 27 m / s.
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