Question

The ballistic coefficient is a measure of body’s ability to overcome air resistance in flight. That parameter is inversely proportional to the deceleration of a flying body and is very important for bullets. The ballistic coefficient was measured for the bullets of two versions of 9 mm Makarov cartridges, PM and PMM (which is a later and modified version). Sample bullets are chosen randomly.

(c) Find a 95% two-sided confidence interval for the mean difference in the ballistic coefficient.
Round your answers to three decimal places (e.g. 98.765).
PM 12.93 12.89 13.13 13.11 12.81 12.83 13.11 12.67 12.85 12.99 13.05 12.75 13.08 13.17 13.16 12.64
PMM 13.89 13.94 13.97 13.66 13.98 13.71

Answer 1

The provided questions explore concepts such as recoil velocity, average force, and conservation of momentum in various physical scenarios, from firearms to billiard balls.

Step-by-step explanation:

The exercise involves the calculation of various parameters related to the motion and interaction of objects per the laws of physics. Specifically, we are looking at situations to do with the conservation of momentum, impulse, kinetic energy, acceleration, and forces exerted on objects. Here are examples from the provided information:

• Recoil velocity calculation of a gun plunger using the conservation of linear momentum.
• Determination of the average force exerted on a gun plunger using the work-energy theorem.
• Comparison of forces exerted on a gun in different circumstances using the impulse-momentum theorem.