A Billiard Ball Is Moving in the X-Direction at 33

question 9

Multiple Choice

A billiard ball is moving in the x-direction at 33.4 cm/s and strikes another billiard ball moving in the y-direction at 38.9 cm/s.As a result of the collision,the first ball moves at 50.6 cm/s,and the second ball stops.In what final direction does the first ball move?

• A)in the x-direction
• B)at an angle of 49.4° ccw from the x-direction
• C)at an angle of 40.6° ccw from the x-direction
• D)at an angle of 56.6° ccw from the x-direction
• E)Such a collision cannot happen.

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Definitions:

Permafrost

Permanently frozen ground, usually occurring in the tundra, a biome of Arctic regions.

Little Rainfall

A climatic condition characterized by low precipitation over a period of time, which can influence ecosystems, agriculture, and water resources.

Reindeer

A large type of deer living in the Arctic and Subarctic regions known for their migration in large herds and their domestication in some areas.

Characteristic Climate

The average weather conditions, including temperature, precipitation, and wind, typically found in a particular region over a long period.