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

(A) 4 ms

(B) 40 ms

(C) 400 μs

(D) 1 s

Answer : option (A)

Solution :

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
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