Final answer:
The shooter's job in practical marksmanship is to maintain balance and accuracy. For a gun sighted at 100 m, calculating bullet drop at 150 m involves complex projectile motion, which cannot be solved here without more data. Increasing muzzle velocity leads to less bullet drop over the same distance, while air resistance can decrease accuracy by slowing and altering the bullet's path.
Step-by-step explanation:
Principles of Practical Marksmanship
Within the guidelines of the principle of practical marksmanship, it is the shooter's job to maintain balance and accuracy. This involves being able to hold the firearm steady and deliver accurate shots under a variety of conditions. Now, let's address the physics problems provided:
Target 150.0 m Away
To answer the first question (a), we need to calculate the bullet drop over the additional 50 m when the gun is sighted to hit a target at 100 m away with a muzzle velocity of 275 m/s. This involves analyzing the projectile motion of the bullet. However, without the exact ballistic coefficients and the time of flight, we cannot provide a numerical answer here.
Effects of Muzzle Velocity and Air Resistance
In respect to the second question (b), increasing the muzzle velocity of the bullet would generally result in the bullet traveling farther before dropping the same vertical distance, due to the decreased time of flight. This means a faster bullet would be less affected by gravity over the same horizontal distance. For the effect of air resistance, it acts in opposition to the bullet's motion, slowing it down and potentially altering its path. If air resistance is significant, it can lead to a greater bullet drop and reduced accuracy at longer distances.