Thanks!!
2007-11-07 07:30:51 · 2 answers · asked by delilah123 4 in Science & Mathematics ➔ Engineering
Friction is the force exerted by one object rubbing against another. For instance, a boat has to contend with the friction exerted by water. The boats propellor must constantly push the boat forward, otherwise the friction will stop the boat's forward momentum.
A hovercraft does not have to deal with as much friction as a regular boat, because it does not actually contact the water. It sits on a cushion of air that causes it to hover just above the water's surface. The major source of friction for the hovercraft, therefore, is caused by air.
Both types of boats move through our atmosphere, so have to overcome friction caused by air.
2007-11-07 09:44:26 · answer #1 · answered by Ego 6 · 0⤊ 0⤋
Try another analogy. A hovercraft is about multiple-terrain, not friction.
2007-11-07 17:39:38 · answer #2 · answered by Bomba 7 · 0⤊ 0⤋