Final answer:
The M203 grenade launcher mounted on the M16A3 rifle has an approximate maximum range of 400 meters, but various factors such as muzzle velocity and air resistance can influence its actual performance.
Step-by-step explanation:
The 40mm grenade launcher (M203) mounted on the M16A3 rifle has a maximum range of approximately 400 meters. This range can vary based on several factors, including the type of grenade, the angle of launch, and environmental conditions.
In the context of projectile motion, the maximum range is achieved when a projectile is launched at an angle of 45 degrees in a vacuum without air resistance; however, practical factors such as the aforementioned can influence the actual range.
When discussing projectile motion, it's important to consider factors such as gravity, air resistance, and muzzle velocity. A higher muzzle velocity would project the grenade farther before gravity significantly affects its trajectory, potentially increasing the maximum range.
However, air resistance can reduce the range by slowing down the projectile. Additionally, trajectory optimization often involves aiming the projectile slightly higher to compensate for the downward pull of gravity over long distances.