The 500-M-Long Spaceship Kangaroo Is at Rest on the Planet

question 27

Multiple Choice

The 500-m-long spaceship Kangaroo is at rest on the planet Hitest for refuelling. Another spaceship, Echidna, passes parallel to Kangaroo at 0.600c. The crew on Kangaroo measure the length of Echidna as it passes and find that the length they measure is exactly the same as the known 500 m rest length of Kangaroo. If Echidna were at rest next to Kangaroo, its length would then be measured to be:

• A)180 m.
• B)320 m.
• C)500 m.
• D)625 m.
• E)781 m.

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Definitions:

Symptoms

Signs or indications of a condition, disease, or change in the body’s normal functioning.

Unintentional Injuries

Injuries that are not inflicted by deliberate means, including accidents, falls, and mishaps.

Mortality Rate

The proportion of deaths to the population in a given area or among a specific group of people over a certain period of time.

Homicide

The act of one human killing another, a serious crime that can have wide-reaching social and legal implications.