The answer is B (The second one). I'm not sure though.
C) total linear momentum of the ball and cannon is conserved.
Basically it happens that in the beginning before there is a momentum acting on the two bodies, these are a unique system. Here the total momentum of the System is 0. However, when the positive momentum of the cannonball is added, the system will be immediately affected by a negative momentum which will pull back the cannon. Could this be extrapolated as a condition of Newton's third law.
Answer:
he average speed for the airplane is 558 km/hr
Explanati
Acceleration because it is at a rise in speed. The formula for acceleration is Speed/Time.
So that there isn't too much force restricting the structure of the circus and cause disaster
