Justin thyme threw a rock straight down off the verrazano narrows bridge in new york city. calculate the velocity 0.500 s after the rock is thrown with an initial velocity of 14.0 m/s. the roadway of this bridge is 70.0 m above the water.

Final speed, v = 39.59 m/s

Explanation:

It is given that, Justin Thyme threw a rock straight down off the Verrazano Narrows Bridge in New York City.

Initial velocity, u = 14 m/s

The roadway of this bridge is 70.0 m above the water, s = 70 m

Time taken, t = 0.5 s

We need to find the final velocity of the rock. From third equation of motion,

a = g

v = 39.59 m/s

So, the final velocity after 0.5 s is 39.59 m/s. Hence, this is the required solution.

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 =

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