If the acceleration of an object moving in a straight line at a constant speed is 3m / s, is the velocity at the end of a 1s always 3m / s higher than that at the beginning of the 1s?

If the acceleration of an object moving in a straight line at a constant speed is 3m / s, is the velocity at the end of a 1s always 3m / s higher than that at the beginning of the 1s?

Yes, suppose the initial velocity is 1m / s, the initial velocity of 1s is 1m / s, and the velocity at the end of 1s is the initial velocity of 2S, v = 1 + (3m / S2 × 1s) = 4m / s, so 4-1 = 3m / s