Final answer:
None of the above is correct. The net external force exerted on a 1100-kg artillery shell with an acceleration of 2.40 x 104 m/s² is 2.64 x 107N. This force is also exerted on the battleship in the opposite direction due to Newton's third law.
Step-by-step explanation:
The question asks about the net external force exerted on an artillery shell and the force exerted on the ship by the shell. To find the net external force on the shell, one would use Newton's second law of motion, which states that force equals mass times acceleration (F = m * a). The mass of the artillery shell is given as 1100 kg, and the acceleration is given as 2.40 x 104 m/s2.
Calculating the net external force, we get:
F = m * a
F = 1100 kg * 2.40 x 104 m/s2
F = 2.64 x 107 N
The magnitude of the force exerted on the ship would be equal in magnitude but opposite in direction to the net external force exerted on the shell, in accordance with Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.