## Force of kicked ball

Let us first calculate the force of ball kicked.

According to FIFA rules ball weights from 0.4 to 0.45 Kg.

From livestrong website

The time of contact between a player’s shoe and the ball is 0.05
seconds, according to James Watkins, a professor of Sports Science at
Swansea University in the United Kingdom, in “An Introduction to the
Biomechanics of Sport and Exercise.”

Ball's speed will be 30 m/s (calculate it if you don't believe us).

As f = m.a and a = v/t so f = (m.v)/t = (.45*30)/.05

That gives us 270N (try it with your calculator).

Great.

## Force of falling ball

Okay! it is the same weight as 0.4 to 0.45 Kg.

Impact Force is complicated more but let us use hyperphysics tool to calculate the force of falling ball from 10 meters and it is 441N and that is crazy.

## Conclusion

You may think yourself hero for being goal keeper but, tell us you are hero when you get ball dropped by 2 years child from 12 floor building on your head.

Note: don't try it .. I believe you are hero.

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