I’m assuming the cannon ball is being shot directly horizontally. If there’s an angle, this answer will be wrong. But either way, you want to use Newton’s Second Law of motion.
F = ma, you could change this to a = F/m to get a better understanding of the equation. Acceleration and force are directly proportional. The mass is inversely proportional to acceleration. This means the net force will be in the same direction as the acceleration.
Alright back to the problem:
F = 4kg*110m/s^2
F = 440N
The correct answer is Salinity.
Salinity refers to the principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater. It is the measure of all the salts dissolved in water. It is usually measured in parts per thousand.
Nitrogen in form of soluble nitrite salts
Carbon in form of carbon dioxide
Nitrogen is converted to salts by the action of nitrogen fixation bacteria or can be provided by use of chemical fertilizers or organic fertilizer
carbon dioxide is present in air from where plants influx it from stomata opening in leafs