Answer:
vertical force cannot change the velocity on the x-axis.  t =x/v₀ₓ
Explanation:
The force is a vector magnitude, so the forces on the x-axis affect the acceleration on this axis. Consequently a vertical force cannot change the velocity on the x-axis.
   [tex]F_{y}[/tex] = m g
  Fₓ = 0
The horizontal velocity in projectile motion is constant, if we neglect the air resistance, so it can be used to find the time of a horizontal displacement
    x = v₀ₓ t
    t =x/v₀ₓ
The only magnitude that is the same for both movements is the time that is a scalar
