An object is dropped from the top of a cliff. You are given the height og the cluff. Describe a way to calculate the time it takes for an object to hit the fround. write down the equations you would use and the steps you would take to calulate the answer.

a.) is the correct answer.

explanation:

hypothesising or postulating

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 =