2) Ein Fußballer tritt gegen einen ruhenden Ball der Masse m = 420 g, woraufhin dieser
mit einer Geschwindigkeit von 20 wei-
terfliegt. Berechne die Länge des Ballkon-
takts des Spielers beim Schuss, wenn hin-
ter dem Schuss eine Kraft von 200 N steckt.

it was given as a lesson and guide for prayer.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =