A clown riding a unicycle leaves home and is traveling along a sidewalk. Their velocity is recorded as a function of time, and is shown in the graph below. a) Sketch the acceleration time graph that represents the motion shown and show any supporting calculations. {5}

b) When is the clown returning to home? {1}

1 the 4 is sig

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

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 =