An overlook in the Shades State Park is 210 ft above Sugar Creek. How much time after being dropped does it take a rock to fall from the overlook to the creek below?

a person with a mass of 106kg has a weight of 1060n

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 =