* The object has a larger surface area: A larger surface area means more contact with the air, leading to greater resistance. Think of a parachute versus a bullet.
* The object has a lower mass: A lighter object is more easily affected by air resistance. A feather falls much slower than a rock because the air resistance has a greater impact on its motion.
* The object has a higher speed: Air resistance increases dramatically with speed. This is why dragsters and airplanes experience significant air resistance at high speeds.
* The air density is higher: Denser air provides more resistance. This is why objects fall slower in high altitude environments where air is thinner.
* The object has a less streamlined shape: An object with a more irregular shape (like a flat piece of paper) creates more turbulence and experiences higher air resistance than a streamlined object (like a bullet).
In short, air resistance is more significant for objects that are:
* Big and flat
* Light
* Fast
* Moving in dense air
* Not streamlined
