it takes 14 seconds for a runner to go from 5m/s to 19m/s?

how do you calucate acceleration

To calculate acceleration, you need to use the formula:

Acceleration (a) = (Final Velocity (v) - Initial Velocity (u)) / Time (t)

In this case, the runner's initial velocity (u) is 5 m/s, the final velocity (v) is 19 m/s, and the time taken (t) is 14 seconds.

Substituting the values into the formula, you get:

Acceleration (a) = (19 m/s - 5 m/s) / 14 s

Simplifying the equation further:

Acceleration (a) = 14 m/s / 14 s

The unit of time (s) cancels out, leaving us with the final answer:

Acceleration (a) = 1 m/s²

Therefore, the runner's acceleration is 1 meter per second squared.