An Astronaut Is Stranded in Space a Distance of 50 $\times$

question 8

Multiple Choice

An astronaut is stranded in space a distance of 50 m from her spaceship.She carries a 5-kW laser gun.If the total mass of the astronaut,space suit,and laser gun is 90 kg,approximately how long will it take her to reach her ship if she points the laser gun directly away from it?

• A)3.2 h
• B)6.5 h
• C)13 h
• D)2.3 \(\times\) 10⁴ h
• E)3.2 \(\times\) 10⁴ s

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Definitions:

Mean

The arithmetic average of a set of numbers, found by dividing the sum of all numbers by the count of numbers.

Discrete Probability Distribution

A statistical function that describes the likelihood of each possible outcome of a discrete random variable occurring.

Mean

The average of a set of values, calculated by summing all the values and dividing by the number of values.

Discrete Random Variable

A random variable that has countable outcomes, such as the number of heads in a series of coin flips.