Relation between Distance and acceleration
[tex]\\ \tt\longmapsto a=dv/dt[/tex]
[tex]\\ \tt\longmapsto a=ds/dt^2[/tex]
So
[tex]\\ \tt\longmapsto a\propto s[/tex]
And
According to Newton's law
[tex]\\ \tt\longmapsto F=ma[/tex]
[tex]\\ \tt\longmapsto F\propto m,a[/tex]