Air assist formula in free fall

You mean resistance, right?

If you look at books on viscous fluid mechanics, you know that there is no point in asking without any conditions.

For balls there is Stokes' and Orson's formulas, which are commonly used as an approximation (only available at lower velocities).

Resistance = (1 2) * air density * square of velocity * windward area of the sphere * (24 Reynolds number) * (1+3 * Reynolds number 16).

Where: Reynolds number = air density * velocity * sphere diameter air viscosity coefficient.

At a temperature of 10 degrees.

Air density = kg m 3

Air viscosity coefficient = pa*s

If the person jumps upright, the resistance formula of the flat surface layer should be applied.

If you are lying flat and falling, it seems that you should use the momentum theorem to find the resistance.

Such a problem should completely ignore resistance. Directly with the free fall formula.

Fall height = time 2) 2 Calculate the moment when passing through each layer, decreasing.

In middle school, as long as you know that it is proportional to speed, the scale coefficient is related to many factors.

v=(1 b)*(e (2bgt)-1) 1+(e (2bgt)), where, b = (a mg) (1 2), m is the mass, g is the acceleration of gravity, t is the falling time, and the drag is proportional to the square of the velocity is f=a*v 2 This is the umbrella package formula for calculating air resistance There is also a grading algorithm to calculate each period of time, using the end time to subtract the time to the third layer minus the time to the second layer, and the difference is the time you want

The amount of resistance experienced by the motion of an object in a fluid is proportional to the cubic of the speed of motion.

i.e. f=kv 3

I would like to know too. But I don't think anyone can answer.

The method of calculating the resultant force in the motion of a free fall air resistance and buoyancy is using a formula. The formula for calculating the air resistance in free fall is f=kv 2. The formula for calculating the free fall air buoyancy is s=vot-gt2 22, and the resultant force is equal to the free fall motion absolute Zen air resistance plus the free fall air buoyancy, so the formula for calculating the resultant force of free fall motion air resistance and buoyancy is f=kv 2 plus talking about macro trap s=vot-gt2 22.