Q211 / 225 · JEE Main 2002 · Physics

Speeds of two identical cars are $u$ and $4 u$ at the specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is

  • A
    1 : 1
  • B
    1 : 4
  • C
    1 : 8
  • Correct answer
    D
    1 : 16

Solution

Use $u^2=2$ as. a is same for both cases $$ \mathrm{s}_1=\mathrm{u}^2 / 2 \mathrm{a} ; \mathrm{s}_2=16 \mathrm{u}^2 / 2 \mathrm{a}=16 \mathrm{~s}_1 \Rightarrow \mathrm{s}_1: \mathrm{s}_2=1: 16 $$

Hence, the correct answer is option: 'D'.

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