Aspaceship is launched vertically from mars by a short, but strong burst of its rockets so that it leaves the surface with a speed vo. what must be the minimum value of vo so that the rocket does not fall back to mars?

it has to be b, about 97 percent.

pretty sure it's false

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 =