Parachutes

There are two ways to look at this. First, approximately 71% of the Earth is covered by water, so from this standpoint, she (he) is more likely to land on water. On the other hand, most flights, both commercial and private, are over land, so most likely, she (he) would land on dry land. Just a guess, but an educated one.

Around 3,000 feet above ground.

This is to allow enough time to perform your emergency procedures in case of emergency. But also to do your canopy (parachute) checks and to position yourself for your landing.

In South Africa the rule is that you must have an open parachute on 1,200 feet above ground.

Depending on your speed and type, size and pack of your parachute, it may require anything from 300 to 800 feet for you parachute to open.

Curerently, Rangers must be jump qualed. There are no leg Rangers anymore, only Airborne Rangers.

i heard there were but i am not sure

Parachutes use convection to create lift by having warm air underneath the canopy rise and flow upward, creating an upward force that helps the parachute stay aloft and descend more slowly. This process is crucial for maintaining control and stability during a descent.

When the box is dropped from the helicopter, it experiences a downward force due to gravity. At the same time, air resistance acting in the opposite direction slows down the box. When the parachute is released, it creates air resistance that counters the force of gravity, allowing the box to accelerate and increase its velocity.

Parachutes have a hole in the top to provide a smoother and more controlled ride. Without the hole the only place air has to go is around the edges of the parachute. When the chute tilts a lot of air spill out the high side, which is destabilizing. The hole lets air pass through, so there is always a flow into and through the chute, so it's not trying to spill out the bottom.

A person parachuting from a plane has already acquired potential energy by rising to whatever altitude the plane is at-this energy has been obtained from the fuel used by the plane. This energy is then turned into kinetic energy as a result of the earth's gravitational attraction, and the parachutist goes into freefall. Braking the speed of fall to make a safe landing, the kinetic energy is returned to the air which is slowing the parachute. The net change when the person lands is zero.

The idea is pure nonsense.

if the parachute is wider there will be more air resistance which slows things down and if there are holes the air can pass through which decreases air resistance. so the wider it is the slower it is.the lighter it is the slower it is

Eat less frequently, get tons of sleep, only do very low-intensity exercise.

First answer silk BUT Wikipedia says: "Bill Pittendreigh, DuPont, and other individuals and corporations worked diligently during the first few months of World War II to find a way to replace Asian silk with nylon in parachutes.Bill Pittendreigh, DuPont, and other individuals and corporations worked diligently during the first few months of World War II to find a way to replace Asian silk with nylon in parachutes." Can someone clarify?

Silk.

They are not fireproof but fire resistant. Fireproof means not burnable, such as a fireproof vault door in a bank. Fire resistant means it can resist fire up to a certain burn time or temperature.

One simple reason: practicability. First of all parachutes are expensive. And having 200 or more parachutes on a fleet of 150+ airplanes would blow airlines' budgets to pieces. Another reason: weight. The weight of all the parachutes would severly limit the capacity of an aircraft. And finally, parachutes are sometimes difficult to operate and would not work with children or people with special needs.

Also, many aircraft accidents happen either immediately after takeoff or just before landing, and there is no time to get all the passengers to put on parachutes (almost all of whom would never have had done so before), get them to the exits and get them out of the airplane, which would also need to be at a sufficient altitude for the parachutes to open safely (before the person wearing the parachute hits the ground). Another consideration is weight and balance. Having all the passengers run to the back of the airplane so they can jump out, when the airplane is already in trouble, may not be the best thing to do (can't jump from the front doors; too many things to hit (i.e., wings, tail, antennas, landing gear, flaps, etc.), and the possibility of ingestion into the engines!) The January 2008 accident involving a British Airways 777 at London-Heathrow is a perfect example of an incident where there was absolutely no time to respond. The flight crew didn't even have time for a 'Mayday' call on the radio, or to tell the passengers and cabin crew to brace for impact. Things can sometimes happen very, very quickly, and in this case the flight crew did an excellent job in getting the airplane on the ground in as few pieces as possible.

The petals are actually a fringe around a head composed of lots of tiny little flowers. The fringe wilts downward and the papus develops around each little flower in the center. The flower closes and when the sun is strong enough to dry the papus the seeds will disperse.

Most commercial airliners would be so hard to exit with a parachute safely that there is little benefit in providing them. The most likely situation from which escape is feasible is if the plane lands in water. After a water landing (since it is somewhat cushioned) there is a higher potential for survivors that, without life vests, might drown before they could be rescued.

Although the modern parachute was created by French inventor Louis-Sebastian Lenormand by the end of the 18th Century, the earliest designs of this device date from the Italian Renaissance period, being Leonardo da Vinci one of the first thinkers that elaborated over the design of one of these devices.

In the Hunger Games, the silver parachutes are gifts to the tributes from their sponsors. They can contain life saving materials.

In the Hunger Games (the games not the book) parachutes symbolize gifts. If you were a tribute in the Games and were sent a parachute, you would get a gift.

In the books however, the parachutes could symbolize many things. But at the end of the series, it would be safe to say that whenever Katniss thinks of the silver parachutes, she will think of her sister Prim (Read book 3 and you will see why).

It would seem sensible that parachutes shouldn't even leak air-- but then the air will spill out of one side or another and the parachute will oscillate wildly and be uncontollable. This is what happens. In fact the parachute will fall at a faster rate with NO HOLES. It was found that letting the air out of a center hole "California Blow-hole" improved the performance and handling, and soon it was discovered that letting some air spill out the rear gave the parachutist some directional control. The Russian "Paracommanders" employed a variety of slots and openings to give far greater forward speeds in the 1960's. Followed Rogallo Parawings and then by early "ram-inflated wings" which operate like gliders. None of these were linear developments, many people contributed to the art and science over many years.

It was President Coin. She used the bomb design from Gale, who didn't know that it would kill Prim. Katniss reckons that Coin deliberately put Prim in danger - deliberately killed her - to win Katniss's favor.

So, Gale designed the bombs, but Coin set them off.

canvas is the best. That's why they use it on boat covers ,bimini tops & the military.