Person-1
[tex]\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{10-0}{10}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{10}{10}[/tex]
[tex]\\ \sf\longmapsto Acceleration=1m/s^2[/tex]
Person-2
[tex]\\ \sf\longmapsto Acceleration=\dfrac{0.25-0}{2}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{0.25}{2}[/tex]
[tex]\\ \sf\longmapsto Acceleration=0.125m/s^2[/tex]
Person-1 is accelerating faster.