1.

.Abody,starting from rest and moving with aconstant acceleration, covers a distance s, in the4" second and a distance s, in the 6" second. Theratio s,/s; is.o0 O (29 (c)

Answer»

Distance covered in nth is

Sn= u+a/2(2n-1)

For n=3, u = 0

S4 = 0 + a/2(2*4 - 1)S4 = 7a/2 m

Similarly,

For n=6, u = 0S6= 0 + a/2(2*6 - 1)

S6 = 11a/2 m

S4/S6 = 7a/2*2/11a

S4:S6 = 7:11

(d) is correct option



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