Stand flatfooted next to a wall and mark the highest point you can reach. Then jump vertically and mark the highest point. The distance between the marks is your vertical jumping distance. Use this to calculate your hang time.
I don't need to know my hang time. If you need to know it for yourself, just follow the directions. Surely you have some kind of time measurement.
If you assume the body is stretched similarly, with one arm upward, before, at the peak of and at the end of the jump, then the vertical jumping distance can be related to hang time. This is not the way most people would jump. The foot-to-center-of mass-distance has to remain the same if the calculation of hang time from jumping distance is to be accurate.
If X is the vertical jumping distance,
X = (1/2)g (T/2)^2
where T is the hang time. T/2 is the time it takes to fall back down.
T^2 = 8X/g
T = sqrt (8X/g)
To calculate your hang time using the vertical jumping distance, you'll need to follow these steps:
1. Mark the highest point you can reach while standing flatfooted next to a wall. Use a measuring tape or a ruler to measure and record this height in inches or centimeters. Let's call this distance "A."
2. Prepare to jump vertically by standing flatfooted next to the wall again. Make sure you have enough clearance above you.
3. Jump as high as you can, reaching for the highest point possible. While in the air, extend your arm upward to create another mark on the wall at the highest point you reach. Measure and record this height in inches or centimeters as well. Let's call this distance "B."
4. Calculate your vertical jumping distance by subtracting the measurement from step 1 (A) from the measurement from step 3 (B). The formula would be B - A = C, where C is your vertical jumping distance.
5. Your hang time can be estimated by using the following formula: hang time = √(2C/9.8), where C is your vertical jumping distance.
6. Substitute the value of C (from step 4) into the formula and calculate the hang time using a calculator or a spreadsheet. This formula assumes a standard gravitational acceleration of 9.8 m/s², but you can adjust it if you're using different units of measurement.
By following these steps, you should be able to calculate an estimate of your hang time based on your vertical jumping distance. However, please note that this method provides an approximation and may not be as accurate as using specialized equipment or technologies.