Question

calculate the average speed (m/s) of the object between 0 and 15 seconds. a distance - time graph is shown. distance time graph

Explanation:

Step1: Identify initial and final values

Initial time $t_1 = 0$ s, final time $t_2=15$ s. Initial distance $d_1 = 0$ m, final distance $d_2 = 15$ m.

Step2: Use average - speed formula

The formula for average speed $v=\frac{\Delta d}{\Delta t}$, where $\Delta d=d_2 - d_1$ and $\Delta t=t_2 - t_1$.
$\Delta d=15 - 0=15$ m, $\Delta t=15 - 0 = 15$ s.
$v=\frac{15}{15}=1$ m/s

Answer:

1 m/s