Question : Two paper screens 𝐴 and 𝐵 are separated by a distance of 200 m. A bullet pierces 𝐴 and then 𝐵. The hole in 𝐵 is 40 cm below the hole in 𝐴. If the bullet is travelling horizontally at the time of hitting 𝐴, then the velocity of the bullet at 𝐴 is
(A) 200ms^{-1}
(B) 400ms^{-1}
(C) 600ms^{-1}
(D) 700ms^{-1}
Answer : option (D)
Solution :
