A Policeman Walks on His Beat Back and Forth

question 24

Multiple Choice

A policeman walks on his beat back and forth. His average speed is determined from

• A) his velocity divided by the time.
• B) time divided by how far he ends up from the starting point.
• C) his total distance covered divided by the time.
• D) time divided by his total distance covered.

---

Definitions:

White Blood Cell

Cells of the immune system that defend the body against both infectious disease and foreign materials.

Liver Cells

Also known as hepatocytes, these are the main cell type found in the liver, playing a vital role in metabolism, detoxification, and protein synthesis.

Golgi Apparatus

An organelle involved in the modification, sorting, and packaging of proteins and lipids for secretion or use within the cell.

Vesicles

Vesicles are small, fluid-filled sacs or bladders within or on the surface of cells, involved in transport, storage, or digestion activities.