The average force on the shell while it is in the gun barrel is 10,869,833.33N.
<h3>HOW TO CALCULATE FORCE?</h3>
Force applied on an object can be calculated by multiplying the mass of the object by its acceleration.
However, the acceleration needs to be calculated by using the following equation:
v² - u² = 2as
Where;
- v = final velocity
- u = initial velocity
- a = acceleration
- s = distance
770² - 0² = 2 (a)(1.5)
592900 = 3a
a = 197633.3m/s²
Force = 55kg × 197633.3m/s²
Force = 10,869,833.33N
Therefore, the average force on the shell while it is in the gun barrel is 10,869,833.33N.
Learn more about force at: brainly.com/question/26115859