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  • Speeds of two identical cars are  and  at a specific in

Speeds of two identical cars are u and 4u at a specific instant. If the same deceleration is applied on both the cars, the ratio of the respective distances in which the two cars are stopped from that instant is  

Option: 1

1 : 1


Option: 2

1 : 4


Option: 3

1 : 8


Option: 4

1 : 16


Answers (1)

best_answer

Both are given the same deceleration simultaneously and both finally stop.

Formula relevant to motion : u^{2}=2  as

\therefore    For First car, s_{1}=\frac{u^{2}}{2a}

For Second s_{2}=\frac{(4u)^{2}}{2a}=\frac{16u^{2}}{2a}

\therefore     \frac{s_{1}}{s_{2}}=\frac{1}{16}

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