A Lighthouse Is Located on a Small Island $3 \mathrm {~km}$

question 1

Multiple Choice

A lighthouse is located on a small island, $3 \mathrm {~km}$ away from the nearest point $P$ on a straight shoreline, and its light makes four revolutions per minute. How fast is the beam of light moving along the shoreline when it is $1 \mathrm {~km}$ from $P$ ?

• A) \(1900 \pi \mathrm { km } / \mathrm { h }\)
• B) \(2000 \pi \mathrm { km } / \mathrm { h }\)
• C) \(1800 \pi \mathrm { km } / \mathrm { h }\)
• D) \(1700 \pi \mathrm { km } / \mathrm { h }\)
• E) \(1600 \pi \mathrm { km } / \mathrm { h }\)

---

Definitions:

Orientations

Sessions or information provided to introduce and acquaint individuals with a new environment, organization, or role.

Podcasting

The creation and distribution of audio or video content series that audience members can download or stream, typically around a specific theme or topic.

Audio

Pertains to sound, especially when recorded, transmitted, or reproduced.

Video

A recording of moving visual images made digitally or on videotape.