Spaceships a and B Are Moving in the Same Direction

question 24

Multiple Choice

Spaceships A and B are moving in the same direction. Spaceship A is moving at 0.80 c relative to a stationary observer, and spaceship B is moving at 0.80 c relative to spaceship A. What does the stationary observer find for the speed of spaceship B?

• A) 1.6 c
• B) 1.3 c
• C) 1.0 c
• D) 0.78 c
• E) 0.98 c

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Definitions:

Farming

The practice of cultivating land, raising crops, and/or keeping animals to produce food and other agricultural products.

Mining

The extraction of valuable minerals or other geological materials from the Earth, often from an ore body, lode, vein, seam, or reef.

Critical Event

A significant occurrence that has a profound effect on operations, which may necessitate considerable adjustments to business activities.

Percentage Of Completion

An accounting method used to recognize revenues and expenses of long-term projects proportionally to the work completed to date.