Question

the paris gun of world war I was a super gun capable of firing a 234lb shell about 81 miles away. these shells are also the first man made objects to make it to a stratosphere. the length of the barrel of one of these guns was about 34 mETers. a projectile fired from a paris gun could reach a velocity of 1640 m/s by the time it left the barrel. what is the acceleration of the projectile in the barrel?

Answer 1

recall that

v^2 = 2as

You have v and s.