# 25 s after the start of the movement, the speedometer showed a speed of 36 km / h.

25 seconds after the start of the movement, the speedometer showed a speed of 36 km / h. What was the average acceleration rate of the car?

To find the average acceleration with which the vehicle under consideration was moving, we use the formula: V = V0 + a * t, where V (vehicle speed according to the speedometer) = 36 km / h (10 m / s); V0 (initial speed) = 0 m / s; t (time elapsed after the start of movement) = 25 s.

Let us express the average acceleration from the formula: a * t = V – V0 and a = (V – V) / t.

Let’s make a calculation: a = (10 – 0) / 25 = 0.4 m / s2.

Answer: The car in question was supposed to move with an average acceleration of 0.4 m / s2.

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