A Projectile Is Fired Vertically from the Surface of the Earth

question 9

Multiple Choice

A projectile is fired vertically from the surface of the Earth at 8 km/s.The projectile will

• A)go into circular orbit about the Earth.
• B)rise and fall back to the Earth's surface.
• C)follow an uncertain path.
• D)escape from the Earth.

---

Definitions:

Labor

The human effort, both physical and mental, used in the production of goods and services.

Natural Resources

Materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain.

Oil Reserves

Quantities of crude oil that are discovered and confirmed by geologic and engineering information to be commercially recoverable under existing economic and operating conditions.

Extra Calories

Consumed energy that exceeds the amount a person needs to maintain their body weight, often leading to weight gain if not countered with increased physical activity.