Solve the Problem $h = 464 - 16 t ^ { 2 }$

question 494

Multiple Choice

Solve the problem.
-A rock falls from a tower that is 464 feet high. As it is falling, its height is given by the formula $h = 464 - 16 t ^ { 2 }$ How many seconds (in tenths) will it take for the rock to hit the ground (h = 0) ?

• A) 5.4 sec
• B) 21.2 sec
• C) 13,456 sec
• D) 21.5 sec

---

Definitions:

Wyoming

A state in the western United States known for its wide-open spaces, mountains, and national parks.

Industrial Rock

Minerals and rocks exploited for their economic value that are not primarily sourced for their gem or precious metal content, such as limestone or sandstone.

Iron Ore

Naturally occurring rocks and minerals from which metallic iron can be economically extracted.

Gypsum

A common calcium sulfate mineral, generally formed by the evaporation of water.