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In fluid dynamics, drag (sometimes called air resistance or fluid resistance) refers to forces that oppose the relative motion of an object through a fluid (a liquid or gas).
Drag forces act in a direction opposite to the oncoming flow velocity.[1] Unlike other resistive forces such as dry friction, which is nearly independent of velocity, drag forces depend on velocity.[2]
For a solid object moving through a fluid, the drag is the component of the net aerodynamic orhydrodynamic force acting opposite to the direction of the movement. The component perpendicular to this direction is considered lift. Therefore drag opposes the motion of the object, and in a powered vehicle it is overcome by thrust.
In astrodynamics, and depending on the situation, atmospheric drag can be regarded as an inefficiency requiring expense of additional energy during launch of the space object or as a bonus simplifying return from orbit.
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How does air resistance affect the acceleration of falling objects?
As a falling object accelerates through air, its speed increases and air resistance increases. While gravity pulls the object down, we find that air resistance is trying to limit the object's speed. Air resistance reduces the acceleration of a falling object. It would accelerate faster if it was falling in a vacuum.
How is friction and air resistance different?
yes it is a big diff in both of them air resistanceis in water butfrictionis every where
Does air resistance increase or decrease the acceleration of a falling leaf from a tree?
Air resistance decreases acceleration of falling objects
Does air temperature affect air resistance?
There are two factors that influence air resistance with temperature. Air density decreases with temperature so that the force needed to push the air out of the way is decreased, thereby decreasing resistance. Conversely, air viscosity increases with temperature (unlike oil for example where viscosity decreases with temperature) so that the drag increases. Under normal conditions, the density change of air has the greatest effect and air resistance decreases at higher temperatures.
Does air resistance depends on the density of the object?
No it just depends on the size and shape of the object. An obect is more affected by air resistance if it is lighter.
Explain why air resistance is larger when the car is traveling faster?
Bikes cars and other moving objects experience air resistance as they move.Air resistance is caused by the frictional forces of the air against the vehicle. The faster the vehicle moves the bigger the air resistance becomes.
Explain how a parachute works using the terms air resistance surface area and gravity?
A parachute works as the gravity allows the parachute to go up into the air, then the surface area is covered with air resistance.
Explain why a man using a parachute falls through air slowly while a stone falls through air very fast?
When an object falls through air, it experiences air resistance. This air resistance is a force that opposes the object's motion. The amount of air resistance an object experiences depends on the object's shape, size, and speed. A man using a parachute falls slowly because the parachute creates a large amount of air resistance. A stone falls very fast because it has a small amount of air resistance.
What is air resistance and what are the two factors that air resistance depends on?
Air Resistance is a force.
What force slows objects moving through the air?
Air resistance
How molecules in the air cause air resistance?
How molecules in the air cause air resistance?
Why does the oscillation of a pendulum gradually slows down after a certain interval of time?
Energy is gradually lost, through air resistance, and resistance in the string.Energy is gradually lost, through air resistance, and resistance in the string.Energy is gradually lost, through air resistance, and resistance in the string.Energy is gradually lost, through air resistance, and resistance in the string.
What is the force that opposes the motion of objects through air?
Air Resistance is the kinetic friction of the object's surface moving through the air. In aeronautical terms this is known as drag.
Is air resistance in a ball being thrown?
Yes, air resistance is on everything where there is air.
How does surface area affect air resistance?
air resistance affects
What is the relationship between air resistance and movement?
air resistance is cooler
When an object falls through the air encounters air resistance its overall speed will be than if it had not encountered air resistance?
The resistance do obstruct the object. The object always travel slower with air resistance. Air resistance is higher with velocity and the object falling through air would have a limited velocity that it can't go through.
