Many sports have specialized equipment: Baseball uses a bat and glove, soccer uses cleats and shin guards, and rock climbing uses ropes, harnesses, and belay devices. Skydiving is no different. In order to know when to open the parachute, skydivers must be altitude aware, or in simpler terms, skydivers must be mindful of how high up they are/ how far away they are from the ground.
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Indeed why? There are videos of examples where a parachutist has deliberately set fire to their parachute in flight, however this is part of a stunt. For 99.9999999% of skydivers, they do not set fire to their parachute as it is needed to save their life. For your information, all skydivers wear a reserve parachute for use in the case of a malfunction of the main parachute.
they spread out so they can have more control over their decent it also slows them down so if they need to they can open their parachute safely
The man who survived has a parachute in his pack.
A helmet, first aid kit and a parachute i guess and a ambulance on the ground if there is a accident!
the magnitude of the skydivers acceleration is zero as he is decelerating by opening his parachute!
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.
A skydiver, falling without an open parachute, will reach a terminal velocity of approx 200 km per hour (55 metres/second).
Anyone who has been trained and certified to use a parachute can use one. This typically includes skydivers, paratroopers, and others involved in activities where parachutes are necessary for safety.
80 m/s2 up
66.7 m/s2
Skydivers must wear a chute or parachute during a skydiving session. Wears must be covering the whole body ,lightweight and paraffined.
Capt Joseph Kittinger of the US Air Force jumped from a helium balloon at 102,800 feet. His parachute deployed somewhere around 15,000 feet - roughly the height that skydivers normally jump from.