An object with a mass of 8 kg moves at a speed of 5 m/s. How much kinetic energy does the object have? Question 2 options:

100 J

200 J

40 J

20 J

Kinetic energy =1/2mv^2

Where m is the mass of the object. V is the velocity

K.E=0.5(8*5^2)

K.E=100J

Explanation:

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 =