The Space Shuttle travels at a speed of about 9.31 x 10 m/s. The blink of an astronaut's eye lasts about 95.3 ms. How many football fields (length = 91.4 m) does the Space Shuttle cover in the blink of an eye?

0.55x745.7j and a calculator

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 =