if by regular skis you mean downhill skis, then longjump skis are similar, but they are nearly twice as long and twice as wide-- the greater surface area makes the ski jumper accelerate faster, thereby allowing him to travel farther off of the jump
Wax to make it simple is slippery, this when placed on the skis reduces the friction between the snow and the skis, (yes there is some friction between skis and snow). The less friction, the faster your skis can glide across the snow, and the faster you go.
In general they are faster, however there are other factors that effect your speed while skiing. Also, at slow speeds longer skis are harder to control.
Nope it is the ability of the skier. Not the skis. But fiberglass skis are probably lighter. But i dont think they would preform as good as skis with a normal base.
Skis for jumping are longer and wider for more air resistence, and skis for racing are long and have slick surfaces and have sharp edges for going faster.
skis are waxed to reduce the friction with the snow and therefore if there is less friction then the skis will go faster.
that depends. If you are Going down hill then in the air is faster.
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It is not the type of Skis or board..it is the person skiing or boarding. The skill level of the person also plays a factor in that. But there is different types of skis or boards you can chose from.
Skis. A snowboarder can't get into an aerodynamic tuck becaue they face sideways. A snowboard isn't as stable as two skis.