With what acceleration does the car move if in 15 seconds its speed increases from 2 m / s to 7 m / s?

Initial data: V1 (vehicle speed before acceleration) = 2 m / s; V2 (vehicle speed after acceleration) = 7 m / s; t (time of accelerated movement of the car) = 15 s.

We express the acceleration of the car from the following formula:

V = V0 + a * t, whence a * t = V – V0 and a = (V – V0) / t.

Let’s perform the calculation:

a = (7 – 2) / 15 = 5/15 = 0.33 m / s ^ 2.

Answer: The car is moving with an acceleration of 0.33 m / s ^ 2.