Two Identical Balls Are at Rest and Side by Side

question 54

Multiple Choice

Two identical balls are at rest and side by side at the top of a hill. You let one ball, A, start rolling down the hill. A little later you start the second ball, B, down the hill by giving it a shove. The second ball rolls down the hill along a line parallel to the path of the first ball and passes it. At the instant ball B passes ball A:

• A) it has the same position and the same velocity as A.
• B) it has the same position and the same acceleration as A.
• C) it has the same velocity and the same acceleration as A.
• D) it has the same displacement and the same velocity as A.
• E) it has the same position, displacement and velocity as A.

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Definitions:

Color Film

A type of film that includes chemical elements for producing images in color, as opposed to solely in shades of gray (black and white films).

Black Maria

The first movie studio: a crude, hot, cramped shack in New Jersey where Thomas Edison and his staff began making movies. So named because it resembled a late nineteenth century police paddy wagon, for which the slang term “Black Maria” was first used.

Special Effects

A range of processes used to enhance or manipulate the cinematic image. In the classical era, special visual effects included images comprised of superimpositions and/or images enhanced by rear projection or matte paintings and backdrops. More modern effects include the vast array of digital effects created by computer-generated imagery (CGI).

Serialized Fantasy

A narrative format often used in books, films, or series where a continuous fantastical story is told over several installments.