22.

a)You are a pirate working for Dread Pirate
Roberts. You are in charge of a cannon that
exerts a force 20000 N on a cannon ball while
the ball is in the barrel of the cannon. The
length of the cannon barrel is 2.19 m and
the cannon is aimed at a 32� angle from the
ground.
The acceleration of gravity is 9.8 m/s2 .
If Dread Pirate Roberts tells you he wants
the ball to leave the cannon with speed v0 =
86 m/s, what mass cannon ball must you use?
Answer in units of kg.

b)Assuming the Dread Pirate Roberts never misses, how far from the end of the cannon is the ship that you are trying to hit (Neglect dimensions of cannon)?
Answer in units of m.

1 answer

6124.3 kg