A 10.0kg gun fires a 0.0200kg with a force of 250.N causing it to accelerate at 12500m/s2. What is the acceleration of the gun? 25.0m/s2

12500m/s2

250.m/s2

5.00m/s2

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.