The velocity of a bullet is reduced from `200 m//s` to `100 m//s` while travelling through a wooden block of thickness `10 cm`. The retardation, assuming it to be uniform, will be.A. `10 xx 10^4 m//s^2`B. `12 xx 10^4 m//s^2`C. `12.5 xx 10^4 m//s^2`D. `15 xx 10^4 m//s^2`

The velocity of a bullet is reduced from `200 m//s` to `100 m//s` whil

1.	The velocity of a bullet is reduced from `200 m//s` to `100 m//s` while travelling through a wooden block of thickness `10 cm`. The retardation, assuming it to be uniform, will be.A. `10 xx 10^4 m//s^2`B. `12 xx 10^4 m//s^2`C. `12.5 xx 10^4 m//s^2`D. `15 xx 10^4 m//s^2`
Answer» Correct Answer - D `u = 200 m//s, v = 100 m//s, s = 0.1 m` `a = (u^2 - v^2)/(2 s)` =`((200)^2 -(100)^2)/(2 xx 0.1) =15 xx 10^4 m//s^2`.

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The velocity of a bullet is reduced from `200 m//s` to `100 m//s` while travelling through a wooden block of thickness `10 cm`. The retardation, assuming it to be uniform, will be.A. `10 xx 10^4 m//s^2`B. `12 xx 10^4 m//s^2`C. `12.5 xx 10^4 m//s^2`D. `15 xx 10^4 m//s^2`

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