Decode the mystery why you can't catch the bill

You must not be too strange with the game "drop money back" that caused a stir on the street. Specifically, a person will give a bill and what you have to do is catch it between your fingers when the other person starts to release.

Almost all of us encounter this situation whenever we want to catch a drop-down banknote.

Do you think you are not really quick and quick? But in fact, this is purely a trap and you can hardly win this game.

This is purely a trap and you can hardly win this game.

In fact, there is a reason why you can't catch the money that comes from work - most people's reaction time is 0.2 seconds.

This is the time when the brain needs to see something, and gives instructions to react. But this time is not enough for your eyes to receive images, the brain processes information and directs finger clamps to hold the coins back.

Experts explain that, when an object is dropped from above, you can find the time it takes for the object to hit the ground based on the free fall velocity and the distance the object moves or finds distance. go of things based on falling velocity and time of landing.

Based on the equation: D = 1/2 gt2.

Inside:

1. D: distance
2. t: time
3. g: acceleration of free fall (gravitational acceleration)

On Earth, the gravitational acceleration is calculated as 9.8m / s ^2, but in this problem, mathematician Tadashi Tokieda rounded up that value g = 10m / s ² .

When using this equation to find the distance based on the human reaction time of 0.2 seconds and the gravitational acceleration value of 10, you get an answer of 0.2m or 20cm.

However, the length of a dollar bill is about 15cm, which means that if your finger is long enough to compensate for this lack, you are more likely to react to catch it.

But you should not surrender in a hurry because you may be "out of the spirit" and have the ability to catch the money falling between your fingers?