4. Bacteria move at 100 um/s. How long would it take one bacterium to move 1.0 m? 5. How far would a car move in 4.8 s if its velocity changed from 14.0 m/s to 16.0 m/s?
6. What is the displacement of a car accelerating from 15 m/s forward to 10 m/s forward in 8.0 s?
7. Apollo 10's re-entry speed was 39 897 km/h. How many seconds would it take the spacecraft to stop in a
distance of 3.0 x 106 m.

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 =

can somebody give me the answer so i can graduate