Average Velocity

Velocity and Displacement

Displacement is the change in position: $\Delta x = x_1 - x_0$.

Average velocity is displacement divided by elapsed time:

$v = \frac{\Delta x}{\Delta t} = \frac{x_1 - x_0}{\Delta t}$

Units: metres per second (m/s). Velocity can be negative — it just means motion in the negative direction.

Examples

Instantaneous vs Average

Average velocity is measured over a finite interval. As $\Delta t \to 0$, it becomes the instantaneous velocity — the derivative $dx/dt$. For constant velocity the two are identical.

Your Task

Implement velocity(x0, x1, dt) that returns average velocity in m/s.