Propulsive force of large caliber aircraft gun used by German Air Force in WW2

The largest caliber aircraft gun operated by German Air Force in WW2 was the 12.8cm flak 40. The weapon fired a 25.8kg shell with a muzzle speed of 880m/s. What propulsive force was necessary to attain the muzzle speed within the 6.00m barrel (assume the shell moves horizontally w/consistant acceleration and neglect friction).

Solution Summary

The solution shows the formula, working and answer to the problem.

The ski boat's jet propulsive system draws water in at point A (at the middle of the bottom of the boat) and expels it at B (at back of boat) at 80ft/s relative to the boat. Assume that the water drawn in enters with no horizontal velocity relative to the surrounding water. The maximum mass flow rate of water through the engin

An aircraft weighing 832 N is accelerated at 11.1 m/s/s for 5 seconds, at which time the aircraft launches. Assume the acceleration is constant. What is the force required to launch the aircraft?
Hint: this is a multiple step problem in which you must derive the variables needed in Newton's equation for force.

The Great Sandini is a circus performer with mass 60.0 kg who is shot from a cannon (actually a spring gun). You don't find many men of his caliber, so you help him design a new gun. This new gun has a very large spring with a very small mass and a force constant of 1300 N/m that he will compress with a force of 5000 N. The insi

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I converted 180 mi/h to 80.45 m/s
I found the acceleration to be 40.23 m/s^2
To find mass I used m=F/a and got 109.3kg

Why is the air in jet aircraft flying at high altitudes pressurized?
Gases move from regions of high pressure to regions of low pressure. What force keeps the gases of the earth's atmosphere from diffusing into interplanetary space, where the pressure is essentially zero?

A jet aircraft is climbing at an angle of 43° above the horizontal and is also accelerating at 4.9 m/s2. What is the total force that the cockpit seat exerts on the 65 kg pilot?
Magnitude (N) / Direction (° above the direction of motion of the plane)

A gun fires a bullet of mass 17 grams out of a barrel 24 cm long. The bullet is accelerated down the length of the barrel with an average force of 16 Newtons.
Using the Impulse-Momentum Theorem, determine the velocity with which the bullet exits the barrel.
What average force is exerted by the individual holding the gun

1) A ball is thrown up into the air. At the highest point in its trajectory, the net force acting on it is
equal to its weight.
greater than its weight.
less than its weight, but not zero N.
zero N.
2) A ball is thrown up into the air. Ignore air resistance. When it is rising and reaches half of it