What Is Air Resistance?
- The physics of supersonic flight
- The Air Between the Ground and a High Point
- The bicycle in space
- Air resistance and streamlining
- Drag in Aircraft
- Air Resistance Force
- Air resistance: A new approach to air-resistance
- Drag force on a body
- Air Resistance
- Air resistance and acceleration of a projectile
The physics of supersonic flight
Here, Pd is the power needed to overcome the drag force, Fd is the drag force, v is the velocity, p is the density of the fluid, A is the cross-section area, and Cd is the speed of the object relative to sound. The cube of the velocity is power needs, so if it takes 10hp to go 80 kph, it will take 80hp to go 160 kph. doubling speed requires an application of eight times the power.
Waves are formed at the leading and trailing edges of the body in supersonic flight. In super fast flows bow waves will form. Waves are separated into two components, supersonic lift-dependent wave drag and supersonic volume- dependent wave drag.
The picture of an F-22 does not show supersonic flight. The aircraft is in a high-G turn which causes the pressure on the wing to decrease, but it does not correspond to supersonic flight. It would like a very small cone and not spread over the length of the aircraft.
The Air Between the Ground and a High Point
There is air between the ground and the highest point. The pieces of paper had to be found. The smallest had very little work to do.
The bicycle in space
The force pushing the bicycle forward is larger than the force that is pushing the bicycle forward. Most of the force that you put on the pedal goes towards speeding up the bicycle. Light objects like feathers are not very strong in the gravity that is acting on them.
The air is all over the place. Light objects fall slower when there is a lot of air resistance. A leaf falls from a tree and floats down to the ground.
Air resistance is pushed up against the leaf. The bigger the surface area, the more resistance there is. The pull of gravity is not as strong as the force of the air resistance.
The leaf is falling slowly. There are no particles of water or air in space. There is no resistance in space.
Air resistance and streamlining
Air resistance is what causes a feather to fall. It lacks the weight to overcome the air resistance and has a lot of surface area for the air to make contact with. If you want to slide a toy car across a smooth piece of wood, the wheels are not generating much force against the smooth surface, so it will move quite easily.
If you slide the same toy car across a thick carpet, you will need to give it more of a push to stop, and it will stop quicker. Increased friction is a consequence. Air resistance is a force caused by air.
The air particles hit the front of the object. The greater the surface area, the more air particles hit the object. The speed of the object and the cross-sectional area of the object are the main factors that affect air resistance.
The more air resistance there is, the faster an object is going. An increased area leads to an increased amount of air resistance. One way to test how streamlining works is to make your own paper airplanes.
Get some pieces of paper, screw them up, and then watch which one falls faster. You can see how a streamlined shape affects how fast you fall. A manuscript from the 1470s has an early version of a parachute, which was before Galileo started hurtling cannonballs off of buildings.
Drag in Aircraft
drag is the field of aerodynamics and it is the main factor in the design of aircraft. The streamlined design of most jet aircraft and rockets allows them to pass through the atmosphere with less drag. Cars and trains use different designs for the same purpose.
Air Resistance Force
Air resistance is a type of force that can be overcome by thrust. drag is usually weak. The air resistance force can be seen when you walk and run.
Air resistance: A new approach to air-resistance
Air resistance is the difference between the surface of a falling object and the air that surrounds it. The crumpled one falls faster because there is less resistance on the paper. Friction can be useful.
Drag force on a body
The drag force is dependent on the square of the velocity. The body increases its drag and its speed. It is at a point where the drag is equal to the weight.
What is an example of resistance? Air resistance is a type of force acting in a different way to the relative motion of any moving object. Air resistance is the force that air exerts against an object.
Air resistance and acceleration of a projectile
The only force on an object is the force of gravity. There is a greater force on objects of more massive size. The mass of the object is related to the net force on the object and the acceleration of it is related to that.
Two things rubbing together causes friction. Air resistance and water resistance are related. Upthrust is the force from water or air.
Things are in the water because of upthrust. Air resistance. When an object falls with air resistance, both its speed and acceleration change.
There is no air resistance when an object falls in a vacuum. Air resistance slows down a projectile as it moves through the air. Air resistance will affect the horizontal component of a projectile.