An object has a displacement of +18.5 m/s ending up at a final position of +7.8 m. The initial position (x) of this object must have been
26.3
m. FOLLOW PROPER RULES OF SIGNIFICANT
DIGITS.

d) the number of neutrons plus the number of protons

dang that balls went far

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 =

prndulum needs thread, weight clock to time swings