A Spaceship Is Moving Away from an Asteroid with a Speed

question 5

Multiple Choice

A spaceship is moving away from an asteroid with a speed of 0.80c relative to the asteroid.The spaceship then fires a missile with a speed of 0.50c relative to the spaceship.What is the speed of the missile measured by astronauts on the asteroid if the missile is fired away from the asteroid?

• A)0.30c
• B)0.50c
• C)0.93c
• D)1.3c
• E)0.65c

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Definitions:

Defective

Having a fault or flaw that impairs usability, quality, or safety, often used in the context of products or goods.

Magnuson-Moss Act

A federal law in the United States that was enacted to protect consumers from deceptive warranty practices.

Express Warranty

An explicit guarantee by a seller to a buyer that a product or service meets certain quality and performance standards.

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A legal term for the assurance that a product will meet a certain standard of quality and functionality without it being explicitly stated by the seller.