physic
posted by aRd .
Jules Verne in 1865 suggested sending people to the Moon
by firing a space capsule from a 220mlong cannon with a
launch speed of 10.97 km/s. What would have been the
unrealistically large acceleration experienced by the space
travelers during launch? Compare your answer with the
freefall acceleration 9.80 m/s2.

You can do this.
Change 10.97km/s to m/s
Then, Vf^2=2ad solve for a.