particle starting from rest falls from a certain height. Assuming that the acceleration due to gravity remain the same throughout the motion, its displacements in three successive half second intervals are S1, S2 and S3 then
(a) S1 : S2 : S3 = 1 : 5 : 9
(b) S1 : S2 : S3 = 1 : 3 : 5
(c) S1 : S2 : S3 = 9 : 2 : 3
(d) S1 : S2 : S3 = 1 : 1 : 1
