please explain:
power & wind resistance
friction & wind resistance
friction & aerodynamics
2007-07-04 21:26:58 · 4 answers · asked by ari 1 in Science & Mathematics ➔ Physics
Wind resistance is friction in the air. It's just called 'wind resistance' because the friction is caused by the wind. Aerodynamics, in general, is the study of an object in flow in a fluid, such as air (the term "fluid" is not to be confused with "liquid"). Wind resistance, a form of friction, affects aerodynamics as a whole, and power also affects aerodynamics. The less friction/wind resistance in a system, the less power needed in a system.
Hope this helps!
2007-07-04 21:53:38 · answer #1 · answered by Anonymous · 0⤊ 1⤋
please explain:
power & wind resistance
If wind resistance is greater, you need more power to propel a body against the wind. If the wind is behind you, you gain power since the wind pushes you forward.
friction & wind resistance
Wind resistance is a type of frictional force only. It is a dynamic friction and comes into effect only when the object is moving relative to the wind. In general, it increases with the speed of the wind vs. the object.
friction & aerodynamics
Aerodynamics is the study of wind resistance (friction) on a moving body (like an aeroplane for example) and minimise the friction so that lesser power is needed to propel the body and less heat is generated. Heat generated is lost energy.
2007-07-05 04:33:30 · answer #2 · answered by Swamy 7 · 0⤊ 1⤋
POWER is the amount of work done or energy transferred per unit of time .ITS UNIT IS WATTS
friction and wind resistance:
wind resistance is the force that resists the movement of a solid object through a fluid (a liquid or gas).
Drag or wind resistance is made up of friction forces, which act in a direction parallel to the object's surface (primarily along its sides, as friction forces at the front and back cancel themselves out.
the drag is the sum of all the aerodynamic or hydrodynamic forces in the direction of the external fluid flow. (Forces perpendicular to this direction are considered lift). It therefore acts to oppose the motion of the object, and in a powered vehicle it is overcome by thrust.
2007-07-05 04:35:06 · answer #3 · answered by goldie B 4 · 0⤊ 1⤋
Please go to Wikipedia. You'll get your answer in detail.
2007-07-05 04:31:10 · answer #4 · answered by Shobiz 3 · 0⤊ 2⤋