Question

A bullet fired from an army rifle with a barrel 1 metre long has a muzzle velocity of 800 m/second. Assuming uniform acceleration inside the barrel, find (i)the time taken by the bullet to travel the length of the barrel and (ii) the acceleration during the interval ​

Answer 1

Step-by-step explanation:

u = 0, v = 800m/s, s = 1m

Now s = 1/2 (u+v) t

==>> 1 = 1/2 (0+800) t

==>> t = 1/400s

Also v = u + ft

==>> 800 = 0 + f (1/400)

==> f = 320000 m/s sq.