A Race Car Will Make One Lap Around a Circular $\pi$

question 25

Multiple Choice

A race car will make one lap around a circular track of radius R. When the car has traveled halfway around the track, what is the magnitude of the car's displacement from the starting point?

• A)2R
• B)R
• C)\(\pi\)R
• D)2\(\pi\)R
• E)zero meters

---

Definitions:

Labor Stage

The period during childbirth when the muscles of the uterus contract to dilate the cervix and push the baby out.

Uterine Fibroids

Noncancerous growths in the uterus that often appear during childbearing years.

Varicocele

A varicose vein above the testicle that may cause lowered fertility in men.

Chorionic Villus Sampling

A prenatal test in which a small sample of the chorionic villi is taken from the placenta for genetic analysis.