how fast and for how long
2006-07-13 18:34:32 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Try a category 5 hurricane or tornado. They can rip the asphalt off a pave road, so they most certainly will lift you off the ground. How fast? about 130-150 MPH. How long? That depends on how long the storm will last, and if you will hit a building.
2006-07-13 18:45:00 · answer #1 · answered by PhysicsDude 7 · 0⤊ 0⤋
I agree with julyleobaby that 80mph is a reasonable estimate and that it depends on your height and weight.
(It would also depend on whether you're wearing a skydiver suit that is designed to catch the wind and reduce your speed when falling from a plane; in such a suit, a lower speed wind would be able to lift you off the ground.)
But keep in mind that the wind won't KEEP you off the ground. It will basically just knock you down, or blow you across the ground, bouncing as you go. The exception would be if the wind is blowing UPWARD. In that case it could keep you off the ground. An example of this is the updrafts in thunderstorms that blow little hailstones up where the air is cold enough to freeze more water on them and make them into bigger hailstones.
However, in order for a VERTICAL wind to KEEP you aloft, it would have to be going upward at about 200 mph (i.e., at the terminal velocity of a freefalling human).
2006-07-13 18:54:02 · answer #2 · answered by actuator 5 · 0⤊ 0⤋
A wind can lift you off the ground but I'm not sure exactly at what speed
2006-07-13 18:42:40 · answer #3 · answered by CLBH 3 · 0⤊ 0⤋
It depends on your weight and height cause if you are in a tornado I'm pretty sure you can be lifted off the ground, also don't attempt that because you might seriously hurt yourself or even kill yourself. I'm guessing the wind speed would be in the 100 mph or higher.
2006-07-13 18:43:42 · answer #4 · answered by julyleobaby 2 · 0⤊ 0⤋
If you want to leave the ground you have to have a lift force greater that your weight. This is hard to accomplish if you are 'person shaped'...you need to be shaped like a wing (airfoil).
The wind passes on both sides of the wing and creates high and low pressure systems..since things like to go from high to low, you need to have the high pressure system at the bottom of your wing. Since you are not wing shaped, you will have a hard time making high and low pressure systems around your body....but give me a call if you figure it out....I'll come for a ride.
2006-07-13 18:50:46 · answer #5 · answered by boxertim2 1 · 0⤊ 0⤋
Yes, hurricanes can lift you about 2-3 meters high and 7-10 meters long. Of course if it's powerful
2006-07-13 22:39:32 · answer #6 · answered by coldplayer 2 · 0⤊ 0⤋