About 1.0 to 1.4
The main forces acting on a skydiver are gravity, which pulls the skydiver downward, and air resistance (drag), which acts in the opposite direction of motion. As the skydiver falls, air resistance increases until it balances out the force of gravity, leading to a constant velocity known as terminal velocity.
The drag coefficient for a rock can vary based on its shape, size, and surface texture. Generally, rocks have a drag coefficient ranging from 1.0 to 3.0, depending on these factors. Smoother, more streamlined rocks will have a lower drag coefficient compared to rough, irregularly shaped rocks.
When a skydiver reaches terminal velocity, the force of weight acting downwards on the skydiver is equal to the force of drag acting upwards. This means that there is no net force acting on the skydiver, resulting in a constant velocity rather than acceleration.
A skydiver loses speed when he opens the parachute because the parachute creates drag by slowing down the movement of air. This drag force opposes the motion of the skydiver, causing a decrease in speed. Additionally, the larger surface area of the parachute increases the effect of air resistance on the skydiver's body.
(standard air pressure and gravity)>(Constant) Force down (newtons) = mass * acceleration due to gravity>Say 70 kg skydiver @ 9.82 m/s/s = 70 * 9.82 = 687.4 newtons>Force up (newtons) = velocity 2 * drag coefficient (say 0.16 typical)>Terminal velocity (when forces balance) 687.4 = v 2 * 0.16Terminal velocity = square root (687.4 / 0.16)= 65.546 metres per second ( 147 mph) terminal velocity
The main forces acting on a skydiver are gravity, which pulls the skydiver downward, and air resistance (drag), which acts in the opposite direction of motion. As the skydiver falls, air resistance increases until it balances out the force of gravity, leading to a constant velocity known as terminal velocity.
The 2012 Nissan GT-R has a drag coefficient of 0.26 Cd.
For cylinders coefficient of lift is approximately half of coefficient of drag while they are equal for Aerofoils.
drag coefficient of the 2017 Kia Forte sedan
coefficient of drag in 0 lift
The 2010 Dodge Charger has a drag coefficient of 0.33 Cd.
The 2006 Mazda MAZDA6 has a drag coefficient of .31 Cd.
The 2004 Honda Insight has a drag coefficient of .25 Cd.
The 2012 GMC Acadia has a drag coefficient of .34 Cd.
The 2004 BMW X3 has a drag coefficient of .35 Cd.
The 2006 Audi A6 has a drag coefficient of 0.29 Cd.
The 2003 Audi A4 has a drag coefficient of .30 Cd.