# A tram starts to move, picking up a speed of 25 km / h if it moves with an acceleration of 1.4 m / s2

August 27, 2021 | education

| **A tram starts to move, picking up a speed of 25 km / h if it moves with an acceleration of 1.4 m / s2, how long it takes to pick up this speed**

To find the duration of acceleration of a given tram to the required speed, we use the formula (we take into account that the tram started moving from a place): V = a * t, whence t = V / a.

Variables: V – required speed (V = 25 km / h = 6.944 m / s); a – tram acceleration (a = 1.4 m / s2).

Calculation: t = V / a = 6.944 / 1.4 ≈ 4.96 s.

Answer: The tram will pick up a speed of 25 km / h in 4.96 s.

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