A 3 kg package is sliding to the left at a velocity of 6 m/s. It collides with a second 6 kg package that is sliding to the right at 2 m/s. After the collision the 6 kg package is traveling to the left at 3.33 m/s. How fast and in what direction is the first package traveling?

an energy transformation flow diagram is shown

where is it ?

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 =