Two Spaceships Approach Earth from the Same Direction

question 91

Multiple Choice

Two spaceships approach Earth from the same direction. One has a speed of 0.21c and the other a speed of 0.34c, both relative to Earth. What is the speed of one spaceship relative to the other?

• A) 0.18c
• B) 0.16c
• C) 0.14c
• D) 0.13c
• E) 0.15c

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Definitions:

Hyperinflation

A very high rate of inflation.

Deflation

A decrease in the general price level of goods and services in an economy over a period, often leading to increased purchasing power of the currency.

Inflation

The rate at which the general level of prices for goods and services is rising, and subsequently, purchasing power is falling.

Disinflation

A reduction in the rate of inflation