projectile motion!! important qn thanks!!?

Question

R1. Does a large range mean that the projectile is in the air a long time? Explain why or why not. If possible, give an example of a situation in which the range is large, but the
projectile does not spend very much time in the air.

Answer 1

range is a function of size of the propellant charge, muzzle velocity and projectile exit angle

Answer 2

Long range, rather than large range, is in reference to distance not time traveled. All projectiles do not travel at the same speed. This is subject to the size and shape of the projectile compared to the amount of propellant used to put it into motion. There are other factors but most have to do more with accuracy than speed and range. Some of the older rifles were quite accurate with fairly good range but because of the lower grade of powder that must be used in them and larger round nosed projectiles, it sometimes took 4 to 5 seconds for the projectile to hit it's mark, a good distance away. The 7.65 Argentina sniper's rifle is the best example I know of for long range speed and accuracy. It's the rifle used to kill JFK. It's trajectory is almost perfectly flat from muzzle to target. I can't remember now what it's muzzle velocity is but it's incredibly fast. It's accuracy range is 1 mile with almost no drop in trajectory. That means it's time in getting there is very short.

Answer 3

"in the air a long time" sounds fairly reasonable, however this just pushes the ambiguity onto the definition of "long" in terms of "long time"

the question has many tanglements of "subjectivity"

I think that what you're looking for is te degree to which "air resisitance" affects trajectory and "target-hitting-capablility" by some unstated criterion.