A bullet emerge from a barrel of length 1.2 m with a speed of 640 ms−1. Assuming constant acceleration, the approximate time that is spends in the barrel after the gun is fired is

A bullet emerge from a barrel of length 1.2 m with a speed of 640 ms−1. Assuming constant acceleration, the approximate time that is spends in the barrel after the gun is fired is

Question : A bullet emerge from a barrel of length 1.2 m with a speed of 640 ms−1. Assuming constant acceleration, the approximate time that is spends in the barrel after the gun is fired is