KinematicsHard
Question
A body starts from rest and is uniformly accelerated for 30 s. The distance traveled in the first 10 s is x1, next 10 is x2 and the last 10 s is x3. Then x1 : x2 : x3 is the same as :-
Options
A.1 : 2 : 4
B.1 : 2 : 5
C.1 : 3 : 5
D.1 : 3 : 9
Solution
x1 =
a(10)2x1 + x2 =
a(20)2 x1 + x2 + x3 =
a(30)2 ⇒ x1 : x2 : x3 = 1 : 3 : 5
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