An Object Is Propelled Along a Straight-Line Path in Space

question 20

Multiple Choice

An object is propelled along a straight-line path in space by a force. If the mass of the object somehow becomes twice as much, its acceleration

• A) stays the same.
• B) halves.
• C) quadruples.
• D) doubles.
• E) none of these

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Definitions:

Out of Africa Hypothesis

A scientific theory proposing that all modern humans originated from a common ancestry in Africa before migrating to other parts of the world.

Denisovans

An extinct species or subspecies of archaic humans in the genus Homo, known from DNA evidence and a few fossil remnants found in Siberia.

Blade Tools

Prehistoric stone tools characterized by their elongated, blade-like shape, used by early humans and hominins.

Homo Erectus

An extinct species of human that lived approximately 1.9 million to 143,000 years ago, known for its upright walking ability.