Question

what is best to say about a runner who is running at a constant velocity?
a. their acceleration is positive.
b. their acceleration is negative.
c. their acceleration is zero.
d. their acceleration cannot be determined.
please select the best answer from the choices provided.
a
b
c
d

Explanation:

Acceleration is defined as the rate of change of velocity. If a runner has a constant velocity, the change in velocity ($\Delta v$) is zero. Using the formula for acceleration $a = \frac{\Delta v}{\Delta t}$, when $\Delta v = 0$, the acceleration $a$ is zero. So a runner with constant velocity has zero acceleration.

Answer:

C. Their acceleration is zero.