The motion of a point is described by the equation: x = 6-t + t ^ 2 Which of the following expressions corresponds

The motion of a point is described by the equation: x = 6-t + t ^ 2 Which of the following expressions corresponds to the dependence of the projection of the velocity of this body on time?

For rectilinear motion with constant acceleration, the equation of motion is: х (t) = хо + Vox * t + ax * t ^ 2/2.
The equation of our motion: x = 6 – t + t2 we represent it as follows: x = 6 + (-1) * t) + 2 * t2 / 2.
It shows that Vox = -1, ax = 2.
ax = (Vx – Vox) / t.
Vx = Vox + ax * t.
Vx = -1 + 2 * t.
Answer: the projection of the speed will be determined as follows: Vx = -1 + 2 * t.