Question

truck moves along the X- axis. It is at x1 = 277 m at ti= 16 sec and is at X2 = 19 m at t2= 25 Sec. Find the truck's average velocity.

Answer 1

By definition, the average velocity is the total distance divided by the total time of travelling. Thus, obtain:

$$v = \dfrac{\Delta x}{\Delta t}$$

where $\Delta x = x_2-x_1 = 19m-277m = -258m$ and $\Delta t = 25s-16s = 9s$.

Substituting to the formula, get

$$v = \dfrac{\Delta x}{\Delta t} = \dfrac{-258m}{9s} \approx -28.67m/s$$

Answer. -28.67 m/s.