Question

(a) What net external force is exerted on a 1100.0-kg artillery shell fired from a battleship if the shell is accelerated at 2.40 × 10 4 m/s 2 ? (b) What is the magnitude of the force exerted on the ship by the artillery shell, and why?

Answer 1

Explanation:

It is given that,

Mass of the artillery shell, m = 1100 kg

Acceleration of he shell, $a=2.4\times 10^4\ m/s^2$

(a) The magnitude of force exerted on the shell can be calculated using Newton's second law of motion as :

F = ma

$F=1100\ kg\times 2.4\times 10^4\ m/s^2$

F = 26400000 N

or

$F=2.6\times 10^7\ N$

(b) The magnitude of the force exerted on the ship by the artillery shell will be same but the direction is opposite as per Newton's third law of motion. i.e $2.6\times 10^7\ N$