A skydiver is not in freefall when they have opened their parachute. The move from free-fall to controlled decent under a wing.
Having ones arms apart improves stability in freefall. A skydiver usually adopts a stable spread body position.
Just as a leaf falls slower to the ground than a tennis ball, a skydiver changes his/ her body position to change the amount of surface area that is affected by air resistance. A flatter body position, for example, will slow a skydiver's freefall rate from a normal arched position.
Typically, a plane reaches an altitude of around 10,000 to 15,000 feet before a skydiver jumps. This height allows for a safe freefall duration and adequate time for the parachute to deploy. Some experienced skydivers may jump from higher altitudes, such as 18,000 feet or more, to extend their freefall experience.
Maximum speed is about 220 to 230mph and can be achieved after about 20 seconds of freefall. Normal parachute opening speed should be not greater that 120mph to avoid damage to the parachute
The skydiver's forward velocity after 1 second would depend on factors such as their body position, weight, and air resistance. On average, a skydiver in freefall might reach a forward velocity of around 120 mph (193 km/h) after 1 second.
The weight of the sky diver has minimal effect on freefall time. Body position and amount of surface area exposed for wind resistance to affect are the two largest factors, and are interrelated to one another.
Panic?Terror?Exhilaration?No, "FREE-FALL". Although one or more of the first three are likely, as well.By the way; a skydiver is only in freefall for about a second after the jump. After that, the air resistance of his body begins to slow him down until he reaches "terminal velocity".
Skydivers use parachutes to slow down their freefall to a safe landing speed. The parachute creates drag, which counteracts the force of gravity pulling the skydiver towards the ground. This ultimately allows the skydiver to land safely without injury.
Speed during free fall can change depending on a skydiver's size and body orientation. In the belly to earth orientation, the speed is about 120 mph. If the skydiver is wearing a wing suit, their vertical speed could be as low as 60 to 70 mph. In a head down orientation, the speed can often be greater than 200 mph.
Acceleration due to gravity is 9.8m/s/s, which is the same as 9.8m/s2. An acceleration of 9.8m/s/s means that with each passing second, the velocity of the skydiver increases by 9.8m/s. Therefore, after two seconds. a skydiver's velocity would be 19.6m/s. The acceleration will continue at 9.8m/s/s until the skydiver reaches terminal velocity, at which point the weight of the skydiver and the air resistance will be balanced, so the net force acting on the skydiver will be zero, at which point there will be no further acceleration.
termial velocity has speed direction an acceleration
Gravity pulls the skydiver towards the centre of the earth (downwards force). The air causes wind resistance, slowing the sky diver down (upwards force). The wind can also cause a slight sideways force upon the skydiver.