A Fireman, 40 $\degree$ Above the Horizontal

question 62

Multiple Choice

A fireman, 40.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 30.0 $\degree$ above the horizontal. If the initial speed of the stream is 40.0 m/s, at what height above the nozzle will the stream of water strike the building?

• A) 9.60 m
• B) 16.6 m
• C) 18.7 m
• D) 22.4 m

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Definitions:

Volcanic Dome

A dome-shaped volcanic feature, largely composed of solidified lava of felsic to intermediate composition.

Caldera

A large volcanic depression that is typically circular to elongate in shape and formed by collapse of a magma chamber.

Volcanic Mudflow

A rapid flow of volcanic ash mixed with water, often melting snow or glaciers, that moves down the slopes of a volcano, also known as a lahar.

Pyroclastic Column

A vertical column of volcanic ash and gas ejected into the atmosphere during an explosive volcanic eruption.