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Gravity is the rate of acceleration at which objects fall to the ground. As an object falls, it pushes air out of its way. Air is pushed upwards in the same direction and with the same amount of force known as its air resistance.
Air resistance is relevant to friction because it shows the impact of the object falling on the ground. If there was no friction the object would just drop in an instant.
Object held still at top of tower (velocity 0). Say 1 kg , g = 10 m/s/s , drag coefficient = 0.001
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Force down (newtons) = mass * acceleration due to gravity (g) = 10 newtons
Force up (newtons) = velocity2 * drag coefficient = 0 newtons
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On release, air friction will come into play, offering a resistance force increasing in proportion to the square of the velocity (exponential), until the upward force = downward force at terminal velocity.
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Terminal velocity = sq root ( 10 / 0.001 ) = 100 metres per second
As long as there isn't any deformation of the surface...meaning that the coefficient of friction remains constant, then "Friction is independent of Surface Area".
You may find this hard to believe, but think about the math. The force of friction is equal to the coefficient of friction times the weight (force/area) of the object as measured perpendicular to the surfaces in contact.
The weight of an object would be given as lbs/in2 or lbs/ft2 . The coefficient of friction is given as a number only, with no units. With a constant measurement of Force/(unit of area), as the area of force application decreases, the force increases, but stays EQUIVALENT considering area of application. For example:
100 lbs/1ft2 is equivalent to 14,400 lbs/1in2 . This is why tiny area high heels damage floors! They are 1/4 in or less in area, the Force is an incredible 57,600 lbs on that 1/4in of contact for a 100 lb woman.
So when the constant Coeff. of Friction is applied, the Force is still equivalent, given the measure of units of area.
It requires a force to propel an object through air, because of the air resistance. Normally, if there were no air resistance and the object were being propelled on the level with no friction, a constant force would accelerate the object steadily. However, it would require a steady force to propel the object through air even without acceleration. And the faster it went the more resistance it would meet.
R is prportional to A, where R is resistance and A is cross section area of conductor
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Is air resistance a contact or non contact force?
Air resistance is a contact force because you are in contact with the air in order to apply that force.
How are air resistance and friction alike?
Air resistance is a type of fluid friction (along with water resistance) and is therefore is a type of friction.
Which force is bigger between air resistance and gravity?
You can not equate the two.
What force slows things down the most?
Friction and Air Resistance
How gravity and air resistance are related to an object's terminal velocity?
Gravity and air resistance (drag) are the two opposing forces acting on the falling body. Gravity causes the object to accelerate (fall faster) while the air resistance causes the object to decelerate (fall slower). At a certain velocity called the terminal velocity these two forces are in balance and there is no change in falling speed.
Is air resistance a contact or non contact force?
Air resistance is a contact force because you are in contact with the air in order to apply that force.
When a N parachutist opens his chute and experiences 800 N of air resistance the net force on him is?
Net force = Force of gravity - Force of air resistance = weight - air resistance = mg - 800N.
What is air resistance and what are the two factors that air resistance depends on?
Air resistance is the force that opposes the motion of an object through the air. It depends on the speed of the object and its surface area exposed to the air.
How is air resistance used in a sentence?
air pressure is when air gets pressed down
What is the net force when encounters 15 N air resistance?
The net force would be the difference between the applied force and the air resistance. If the applied force is greater than the air resistance, then the net force would be in the direction of the applied force. If the air resistance is greater than the applied force, then the net force would be in the opposite direction.
What force slows objects moving through the air?
Air resistance
A feather is in freefall when the force of gravity is greater than the force of air resistance is equal to the force of air resistance is less than the force of air resistance is the only force acting?
"Free fall" means that gravity is the only force acting on a body.
Is air resistance a pull force or push force?
Yes resistance would be a push force.
What is air resistance for kids?
Air resistance is a force that pushes against things as they move through the air. When you ride a bike, run, or jump, you can feel the force of air resistance trying to slow you down. The bigger or faster you are moving, the stronger the air resistance will be.
How are air resistance and gravity related?
Air resistance is a force that opposes the motion of an object through the air, slowing it down. Gravity is a force that pulls objects toward the center of the Earth. When an object is falling, gravity accelerates it downward, while air resistance acts in the opposite direction, reducing the acceleration.
What is the force air resistance?
Air resistance is a friction force, the flow of air over a surface will cause friction and produce drag. Thanks
How is it air resistance related to the surface area of an object?
Air resistance is directly related to the surface area of an object - the larger the surface area, the greater the air resistance encountered by the object as it moves through the air. This is because more surface area means more air molecules coming into contact with the object, resulting in a greater force opposing the object's motion.
