Dodany: Jan 10, 2008   Od: TMWMedia

Czas: 2:40

Kanal: Tech

http://www.tmwmedia.com/Wonders_of_Chemistry_&_Physics.html#K4418DVD One of Newton's Laws of Motion states that if the forces acting on an object are balanced, then the object will maintain a constant speed of travel. For example, if friction and air resistance acting upon a cyclist are equal to the pedaling speed, the cyclist's speed will remain the same. This program explains forces such as lift, air resistance, and gravity, and their effects on skydivers, airplanes, and racing cars. The program also describes how airplanes counter gravity in order to fly. To order this and hundreds of other terrific educational titles, go to tmwmedia.com

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Tagi: show  me  science  physics  gravity  force  tmw  media