A Stone Is Thrown Vertically Upward with an Initial Speed

question 74

Multiple Choice

A stone is thrown vertically upward with an initial speed of 19.5 m/s.It will rise to a maximum height of:

• A)4.9 m
• B)9.8 m
• C)19.4 m
• D)38.8 m
• E)none of these

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Definitions:

Embryonic Disk

The platelike inner part of the blastocyst that differentiates into the ectoderm, mesoderm, and endoderm of the embryo.

Blastocyst

A stage within the germinal period of prenatal development in which the zygote has the form of a sphere of cells surrounding a cavity of fluid.

Trophoblast

The outer part of the blastocyst from which the amniotic sac, placenta, and umbilical cord develop.

Placenta

An organ connected to the uterine wall and to the fetus by the umbilical cord. The placenta serves as a relay station between mother and fetus for the exchange of nutrients and wastes.