(2012? Pudong New Area model) As shown in the picture are two photos taken by a high-speed camera of the moment when a bullet passed through an apple. The time when these two photos were taken

The diameter of the apple is about 0.1m, so the flight distance of the bullet is about 0.2m,

So the flight speed of the bullet.v=xt=0.24×10?4m/s= 5×102m/s. Therefore, B is correct and A, C, and D are incorrect.

So choose: B.