Aero Dynamics

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When you heat air its molecules move faster and make it bounce farther away. That makes the hot air in the balloon lighter than the air around it. So if you attach a heater under a balloon it will float up. To control how high a hot air balloon will fly you can attach sand bags to the balloon and let the sand bags go when you want to go higher...
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When you heat air its molecules move faster and make it bounce farther away. That makes the hot air in the balloon lighter than the air around it. So if you attach a heater under a balloon it will float up. To control how high a hot air balloon will fly you can attach sand bags to the balloon and let the sand bags go when you want to go higher...
Showed next 250 characters

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Air Bags 2 Crash! Your car just smashed into the car right in front of you at a speed of 35 mph. The whole front of your car is smashed but luckily your head isn’t, thanks to the airbag deploying...	3 / 646
Air Bags Crash! Your car just smashed into the car right in front of you at a speed of 35 mph. The whole front of your car is smashed but luckily your head isn't, thanks to the airbag deploying...	3 / 646
Air Bags Can Kill Even though air bags are designed to save lives, they can be harmful or fatal to some people. The National Highway Traffic Safety Administration has recognized this concern and has made efforts to reduce injuries caused by air bag deployment by allowing the installation of a switch that turns off air bags...	3 / 633
AIR BAGS IN AUTOMOBILES Air bags are proven and effective safety devices. Between 1990 and 2000 inclusive, air bags saved about 300 lives in India. The number of lives saved increases each year, as air bags become more common in vehicles on our roads...	5 / 1222
Air Bags Safety features in cars Air Bags Air bags are safety features installed in cars so that upon collision the driver limits the damage that is inflicted on him/her...	2 / 342
Air Bag Safety For The Prevention Of Injury And Death Air bags are designed specifically to cushion occupants as they move forward in a front-end crash, keeping the head, neck, and chest from hitting the steering wheel or dashboard...	3 / 664
Air Assault Quickly, I make my way to the waiting Blackhawk helicopter. Even with my full combat load strapped to my back the rotor wash threatens to push me over...	6 / 1418