Answer:
[tex]5 m/s^{2}[/tex]
Explanation:
acceleration is defined as the rate of change of velocity per unit time. Therefore, acceleration, [tex]a=\frac {\triangle v}{\triangle t}[/tex]
where [tex]\triangle v[/tex] is change in velocity and t is time
Substituting initial and final velocities with 25 m/s and 10 m/s then using time as given in the question of 3 s then
[tex]a=\frac {25-10}{3}=\frac {15}{3}=5 m/s^{2}[/tex]
Therefore, the acceleration is [tex]5 m/s^{2}[/tex]
