A Particle Starts from Rest at X_i = 0 and Moves

question 47

Multiple Choice

A particle starts from rest at x_i = 0 and moves for 10 s with an acceleration of +2.0 cm/s². For the next 20 s, the acceleration of the particle is −1.0 cm/s². What is the position of the particle at the end of this motion?

• A) zero
• B) +3.0 m
• C) −1.0 m
• D) +2.0 m
• E) −3.0 m

---

Definitions:

Foramen Ovale

An opening in the septum between the two atria of the heart in the fetus which normally closes shortly after birth.

Fossa Ovalis

A depression in the atrial septum of the heart, marking the location of the foramen ovale in the fetal heart.

Stress

A physical, chemical, or emotional factor that causes bodily or mental tension and may be a factor in disease causation.

Fetal Development

The process of development and growth of a fetus inside the womb from conception to birth.