Compare the Order of Magnitude of the Accelerations of a Human

question 9

Essay

Compare the order of magnitude of the accelerations of a human being in a crowd where the average distance apart is 3 m and the speed of walking is 4 km/hr, to those of microscopic particles of the order of 5 ìm apart being jostled by their neighbours several hundreds of times every second.

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Definitions:

Protostomes

A group of animals within the animal kingdom that develop the mouth before the anus during embryonic development, as part of the blastopore’s fate.

Spiral Cleavage

A type of early embryonic development found in some invertebrates, where cells divide at oblique angles to each other.

Deuterostomes

Deuterostomes are a major group of animals characterized by their embryonic development; in deuterostomes, the anus forms before the mouth during early embryogenesis.

Protostomes

A group in the animal kingdom distinguished by their embryonic development; during gastrulation, the first opening (the blastopore) becomes the mouth.