Answer:
Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. ... Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio.
Explanation:
The bus and the truck have the same velocity.
Also, Valerie and Owen have the same velocity.
The DNA chain is 364 times smaller than the complex virus.
<h3>
How small if the DNA chain?</h3>
The size of the DNA chain is calculated as follows;
relative size of DNA chain = size of complex virus/size of DNA chain
relative size of DNA chain = 171 mm / 0.47 mm
relative size of DNA chain = 363.83 = 364
Thus, the DNA chain is 364 times smaller than the complex virus.
Learn more about complex virus here: brainly.com/question/15005515
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