# Using the equation of motion of a material point u = 2 + 5t, determine the instantaneous speed in 5 seconds.

October 7, 2021 | education

| 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.