2012165438+1On October 25th, Liaoning, China's first aircraft carrier equipped with an ejection system to help the aircraft take off, completed the first take-off and landing flight training of J-15 and obtained it. (1) Let the initial speed of takeoff with the aid of the ejection system be V0,

According to the formula V2-V02=2ax.

Substituting the data, we get: V0=30m/s?

(2) When the ejection system is not installed, the plane will move in a straight line at a constant speed from rest. According to the kinematic formula, the hull length of the ship is at least:

x=V22a=2500 10m=250m？

Answer: (1) The ejection system must make the aircraft have an initial velocity of 30 m/s. 。

(2) The hull length should be at least 250 meters.