Question

A particle moves from x1 = 5 cm to x2 = 20 cm in 5 s. The average velocity of the particle during this time interval is

Answer 1

$$v_{avg}=\dfrac{\Delta x}{\Delta t}=\dfrac{0.2\ m-0.05\ m}{5\ s}=0.03\ \dfrac{m}{s}=3\ \dfrac{cm}{s}.$$