Answer :
- Initial velocity=u=0.3m/s
- Final velocity=v=0.7m/s
- Time=t=30s
[tex]\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{0.7-0.3}{30}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{0.4}{30}[/tex]
[tex]\\ \sf\longmapsto Acceleration=0.01m/s^2[/tex]