An automobile is traveling on a long, straight highway at a steady 75.0 mi/h when the driver sees a wreck 180 m ahead. At that instant, she applies the brakes (ignore reaction time). Between her and the wreck are two different surfaces. First there is 140 m of ice, where the deceleration is only 1.30 m/s2 . From then on, it is dry concrete, where the deceleration is a more normal 7.00 m/s2 . a)What was the car’s speed just after leaving the icy portion of the road? b)What is the total distance her car travels before it comes to a stop? c) What is the total time it took the car to stop?

volume: 22

density: 7.04

where is the photo and the answer choices?

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 =

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation