A Robot Spacecraft Is Sent to Mars to Explore the Martian

question 43

Multiple Choice

A robot spacecraft is sent to Mars to explore the Martian polar ice cap. Designers can surround it with a set of inflatable balloons that pop out like automobile air bags as soon as the spacecraft's re-entry parachute opens up. When the spacecraft lands, it will be able to roll for a few meters across the surface of Mars. The popout balloons have an advantage to the spacecraft, because

• A) they cancel out the normal force of the surface of Mars.
• B) they decrease the kinetic energy.
• C) they increase the time of impact and lessen the stopping force.
• D) the impulse that stops the spacecraft for landing is less with these balloons.

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Definitions:

Display Control

A feature or tool that manages how content is visually presented on a screen.

Regular Field

A standard data entry area in a form or database, used to input or display single pieces of information.

Query Design Grid

A graphical tool within database software that lets users construct queries by laying out fields and criteria in a grid format.

Calculations

Mathematical operations performed to determine a result, widely used in various fields such as mathematics, finance, and data analysis.