Air Resistance Examples of Air Resistance How to Reduce Air Resistance

air resistance also called drag what is air resistance air resistance is frictional force that air pushes against moving object movement air resistance air resistance is also known as drag air resistance always tries to slow moving object down the faster you move the greater the resistance let's look into the example riding bicycle when you ride bicycle fast you can feel the air pushing back against your face and body this is because air resistance always acts in the opposite direction to the movement of the object the faster the bike moves the bigger the air resistance becomes this is because of the frictional forces get bigger the faster you go look at the forces acting on you and the bicycle when riding bicycle movement air resistance which is frictional force friction acts on the tires of the bicycle gravity also called weight on day with heavy blowing winds it is very difficult to walk through air as it pushes back against you when parachute falls down air resistance movement causing the parachute to fall slowly the open parachute has very large surface area the bigger the surface area the greater the resistance on windy gain autumn have you seen the beautiful orange or red leaves of trees floating all over the place trying so hard to touch the ground when leaf falls from tree it floats gently down to the ground air resistance pushes up against the surface of the leaf leaf is so light the pull of gravity is not much stronger than the puts forth of the air resistance so the leaf falls slowly let's see the forces which act on an aeroplane air resistance and gravity are two inbuilt forces of nature which act on anything lifted from the earth and move through the air thrust and lift are created artificially to overcome air resistance and gravity in order to enable an airplane to fly the engine and propeller combination is designed to produce thrust to overcome air resistance the wing is designed to produce lift to overcome gravity also called weight reducing air resistance in order for things to move efficiently through air they need to have the smallest possible surface area this is because the bigger the surface area the greater the resistance therefore things need to be streamlined to push against the air let's see some examples crouching down low in the bikes helps racing cyclists to reduce air resistance on them and cycle fast we're in streamlined helmets with special smooth shapes is an advantage for them as they allow the air to flow over the cyclist more easily car designers test different streamline shapes in wind tunnels as they want to see which shape cuts through the air best worries you spoilers to help air flow more smoothly over their bulky shapes for more facts about air resistance visit our air resistance page by clicking the link in the video description for more free lessons worksheets quizzes and videos like this visit Cade school lessons comm like Facebook page subscribe our youtube channel follow us on Pinterest and Twitter by clicking the links in this video description thanks for watching and see you next time in another video like this