Suppose θ is inclination of inclined plane acceleration along inclined plane a=gsinθ Sn= distance travelled by object during nth second. Initial speed u=0 By equation of uniformly accelerated motion Sn=u+
a
2
(2n−1) Sn=0+
gsinθ
2
(2n−1)=
gsinθ
2
(2n−1) ........(i) Distance travelled during (n+1)th second. Sn+1=0+
gsinθ
2
[2(n+1)−1]=
gsinθ
2
(2n+1) ........(ii) Dividing equations (i) and (ii)