After landing safely on the target the cat tries another projectile apparatus. This time the cat is

Question

shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55º0 and can be
assumed to be at ground level during launch. With what speed (in km/h) does it have to be
launched to make it approximately 5 m over the wall if the wall is 250 m from the cannon?

Answer 1

just solve
v cos55º t = 250
v sin55º t - 4.9t^2 = 35

Answer 2

we don't know for sure that the max height is 35m thought, so oobleck's answer might not actually be accurate.