Physics

How does air resistance affect how fast things fall?

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2012-09-18 19:05:35
2012-09-18 19:05:35

Air resistance is basically friction between the object on the air- it has to push the air out of the way, and slows down.

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No. The only reason that a feather can't fall as fast as a rock is because of air resistance.


Whether an object falls quickly or slowly basically depends on its mass, and its air resistance. More mass will have the tendency to make things fall faster; more air resistance will have the tendency to slow it down. The air resistance depends, to a great extent, on the object's surface area; however, the shape of the object also plays a role.


It will fall just as fast as an object of any other mass - assuming that air resistance is negligible. That is to say, if an object has a lot of surface area, it will fall slower due to air resistance.


all things fall at the same speed


Weight does not affect how fast objects fall; it is the air resistance that they encounter that affects speed. For example a sheet of paper has a large surface area, so a large air resistance. Whereas a rock has a smaller surface area, so less air resistance (so falls quicker).


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Yes. It's called wind resistance and is the reason why paper falls slower than a rock. If two objects are put in a perfect vacuum, where all of the air is removed, a feather will fall as fast as a one ton weight. Gravity effects all objects in the same way, and wind resistance is the only reason they fall at different rates.


All objects fall at a rate of 9.8 meters per second, or, 23 miles per hour. However, this is how fast they would fall in a vacuum, which is hardly ever the case on earth. To find out their true speed, you would have to minus the air resistance as well.


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It is gravity that creates the force that causes an object to fall. We know that gravity is a function of mass, and the mass of the objects being considered will have an effect on how fast they fall. Additionally, the shape of the object will have something to do with how fast it falls. A flat piece of cardboard will not fall as fast as a glass ball of the same mass.


While in a vacuum they will fall at the same rate, in air their is much more air resistance for the flat piece since there is much more exposed area so it will not fall as fast


No all objects fall at the same speed, unless air resistance is involved


Without air resistance, raindrops would fall with exactly the same characteristics as rocks ... their speed would increase 9.8 meters (32.2 feet) for every second of falling. (Of course, without air, raindrops would instantly evaporate; but you get the idea.)


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A lot, you can fall as fast (or as slow) as a feather, since there is no air resistance to the feather's fall. You can jump about 2x what you can jump on the earth. The stars do not twinkle when viewed from the moon since there is no atmosphere to distort the sunlight.


Mass doesn't effect how fast something falls, it is their size. This is related to air resistance. The larger the bodies, the slower they fall. ( This is what i remember from my science lesson)


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The speed that things fall to the earth depends on two things, how fast they started falling and how long they have been falling. The equation for finding that speed, v, is: v = v0 + a*t where v0 is the initial speed something began falling, a is the acceleration or change in velocity is causing it to fall, and t is the time it has been falling. If the object is falling on the earth, the acceleration due to gravity is 9.8 m/s2. So, if you drop something off a very tall building by just letting it go, letting v0 = 0, then after 10 seconds, it will be moving at 98 m/s. The weight of the object only matters if there is air resistance.


if an object is lightr it will fall slower because gravity wont take it down as fast if it is heavier it will make the gravity pull it down faster


It isn't, necessarily. But the force of gravity is constant, whereas the force of air resistance depends on how fast you're moving through the air. So when you begin to fall, gravity is stronger, and it makes you fall faster and faster. But as your speed increases, so does the force of air resistance, and eventually, the force of air resistance builds up to be equal to the force of gravity. At that point, you keeep falling, but your speed doesn't grow any more.


Becuase this tiny paper copter has a very low terminal velocity. The force of gravity on the paper copter is very small, so it does not have to fall that fast to reach an equal amount of air resistance. The force of gravity is equal to the force of air resistance on the copter while falling very slowly, so it cannot accelerate any more, making it fall slowly.


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No. Weight has nothing to do with how fast objects fall, except for things that get in the way, like air, it's all gravity.Related Information:The phenomenon of falling is caused by the gravity of at least two objects, like a stone and the Earth, mutually attracting one another. For objects falling to Earth, there is the added negative force of drag (the resistance of air friction working against gravity). Drag acts to slow the rate of fall of any object that it acts upon. Objects of lesser density, or poor aerodynamic qualities, are affected more than objects of greater density or excellent aerodynamic qualities. Drag can be virtually eliminated readily, by allowing objects to fall in a vacuum chamber where feathers, dust bunnies, and bowling balls fall at the same rate.


A feather and a stone do not fall at the same rate. The feather falls at a slower rate because a feather is subject to the effects of air resistance (it's air resistance to weight ratio is small. A stone has a large air resistance to weight ratio) . The feather may also be subject to blowing winds. Think of 2 pieces of wood. One is 10 lbs and is a sheet, the other is 5 lbs and a block. The weight does not change how fast they fall but the resistance to the air does and so the 10lb sheet of wood takes longer to fall.



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