KinematicsEasy
Question
Speeds of two identical cars are u and 4u at the specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is
Options
A.1 : 1
B.1 : 4
C.1 : 8
D.1 : 16
Solution
Use u2 = 2as. a is same for both cases
s1 = u2/2a ; s2 = 16 u2 / 2a = 16 s1 ⇒ s1 : s2 = 1 : 16
s1 = u2/2a ; s2 = 16 u2 / 2a = 16 s1 ⇒ s1 : s2 = 1 : 16
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