# How fast do cliff divers hit the water?

It pushes you toward the ground, or, in the case of cliff diving, toward the ocean, at a rate of 32 feet per second every second as you fall (9.8 meters per second per second). That's faster than most people think when they try it for the first time!

The force of gravity pulls you down to the ground with an acceleration of 9.8 m/s2. But because you're moving through space, you experience no net force from gravity. Instead, you are subjected to the force of air resistance while falling, which is proportional to your mass and the square of your speed. This means that if you double your speed, you will be able to resist the force of air resistance for twice as long.

When you reach the end of your dive, the force of air resistance stops acting on you, and then the force of gravity begins pulling you back to the surface. The only way for you to avoid being pulled under by this force is if you give up horizontal movement and start swimming upward.

At any speed below 50 miles (80 km) per hour, the human body can withstand g-forces of up to 1 g. However, many athletes who participate in extreme sports attempt dives from heights exceeding 30 feet (10 m), which results in maximum g-forces of about 3 g.

## How fast do divers hit the water?

A diver hits the water at approximately 35 miles per hour after plunging off a 10-meter platform! That has an effect! A free-falling diver accelerates into the sea at 32 feet per second each second. To sustain the entrance and pull through the water at such speed, a platform diver must have particularly powerful shoulders and triceps.

The maximum depth that a human can survive in underwater is called the "critical point". The pressure of water against your body forces out all the air in your lungs, which causes immediate unconsciousness unless you are equipped with special scuba equipment. At this point your heart will stop because there is no longer enough oxygen in your blood to keep it beating. Divers cannot stay under water for more than about ten minutes without special precautions because even small increases in pressure above critical levels will cause organs to fail.

At first glance it might seem that diving is very dangerous. But actually it's not as bad as you think! Modern scuba gear makes things much safer. Also, many accidents happen from surface activities while people are under water; e.g. ropes being pulled across a platform deck may fall on a diver who is working nearby. Finally, many deaths are caused by other people's mistakes! If you look after yourself and use proper techniques, you have very little chance of suffering injury while diving.

The main danger to life when diving is decompression sickness (DCS). This occurs when bubbles of gas form inside your body during a rapid change in pressure.

## Can you fall off a cliff underwater?

You can't "fall" over an underwater precipice; instead, you float. Divers typically use a buoyancy control device (BCD), which is similar to a balloon and may be inflated or deflated to manage their buoyancy. If a diver removes all the air from their BCD, then they will sink.

People have fallen over cliffs while skydiving. The most common way this happens is when one jumper strikes another with enough force to cause them to lose their grip on their parachute. In this case, the struck jumper usually falls toward the nearest object, which in most cases is a large group of people who have not taken part in the stunt yet.

Skydivers have also been known to jump off cliffs with no parachutes, simply because they can't afford to rent them. This is generally done at locations where there are no buildings close by that might be a danger if they hit something. For example, one jumper I knew used to like to jump off the top of hills. There were never any trees near the spot he would land, but sometimes there would be rocks below. He always made sure that he was the first person to jump of the cliff so that nobody could follow him and get hurt.

In general, falling objects tend to break your neck before they break your bones, so if you're careful where you step, you should be fine.

## What’s the highest cliff dive?

NEW WORLD RECORD | HIGHEST CLIFF DIVING JUMP IN LASO 58.80 meters (192 ft.) A canyoneer from Brazil has established a thrilling world record after leaping over 60 meters from a cliff into a pool of water. The diver, who was not identified by media reports, broke his own previous record by more than 10 percent on Saturday in the Rio Doce river near Macau. The previous record was 50.93 meters (164 ft.), set in 2005 by a Brazilian canyoneer also working with a local company.

The diver entered the water at the top of a 30-meter-high (100-foot-high) cliff and was accompanied by two guides. After reaching the bottom of the cliff, he moved toward the middle where there was an opening about 1.5 meters (5 feet) wide. Here, the river made a sharp turn to the left, forming a small beach. The diver jumped over this gap, landed on the other side and then continued swimming toward the middle of the river, which was roughly 150 meters (500 feet) long.

He reached the middle of the river and stopped moving, indicating that he had safely made it across.

## What is the highest recorded jump into water?

58.8 m The record for the highest jump from land into water was set by Laso Schaller, a Brazilian-Swiss athlete, who leapt 58.8m (193ft) from a cliff in Switzerland in 2015. The previous record was 53.9m, which was also set by Laso Schaller.

The longest free-fall time in history is three minutes and forty-nine seconds. It was reached by Felix Baumgartner of Austria in 2011 when he jumped from over 128,000 feet (38,100m) away with the aid of a jet pack.

The fastest human-powered vehicle is the Lotus Elan SC, built in 1977. It can reach 140 miles per hour. Driver John Love managed one mile in 13.5 seconds at 150 miles per hour on this track in England in 1994.

The tallest building with an elevator is the Burj Khalifa in Dubai at 2228 meters (7347 ft). The first and second floors alone are 170 meters (560 ft) high!

And the largest airship is also the Burj Khalifa, which measures 7740 square meters (84,500 sq ft). It's not actually floating but rather it's based on a framework of beams connected by struts and ribs.

## How fast does a waterfall fall?

A huge raindrop, approximately a quarter-inch broad or the size of a house fly, with a terminal fall speed of roughly 10 meters per second, or about 20 miles per hour. The force of impact can induce compaction and erosion of the soil at that speed. This is enough to create a splash of many feet high when hitting water.

The majority of a waterfall's flow rate is calculated by measuring its height and width and then multiplying those numbers by the average rainfall in your area. For example, if a waterfall is 100 feet wide and 25 feet tall, it would take on about 1 million gallons of water per day. That's a large amount for most rivers or streamlets to handle! Most river flows are much smaller - typically between 50 and 500 thousand gallons per day. A few streams can flow as much as 3 million gallons per day, but they are rare.

Most rivers flow into larger bodies of water, like oceans or lakes. When there is more water in a body of water than what can be held inside it, some of that excess will find its way over the banks of the river or stream that feeds it. This is called "overflow" and can lead to severe flooding.

Rivers also feed into other rivers or streamlets which continue down their own paths without merging with any other waters. Sometimes these other streams join together to form a lake or pond.

##### Marian Zimmerman

Marian Zimmerman has an eye for the beautiful, an appreciation of the unusual, and a passion for travel. She's never happy in one place for too long, and enjoys learning about new cultures through their histories, art, and architecture.