Answer:
[tex]a=0.25\ m/s^2[/tex]
Explanation:
Initial speed of the mobile = 3.2 m/s
Final speed of the mobile = 5.2 m/s
Time, t = 8 s
We need to find the acceleration of the mobile. It can be given by the change in velocity divided by time. So,
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{(5.2-3.2)\ m/s}{8\ s}\\\\=0.25\ m/s^2[/tex]
So, the acceleration of the mobile is [tex]0.25\ m/s^2[/tex].