A car, moving along a straight stretch of highway, begins to accelerate at 0.0436 m/s^2. It takes the car 49 s to cover 1 km.
How fast was the car going when it first
began to accelerate?
Answer in units of m/s.

4

explanation:

4

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

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 =