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- Unit 05: Circular Motion and
- What does it mean when astronauts
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Card 16 / 58: What does it mean when astronauts are described as weightless?
A)
There is no force of gravity acting on them.
B)
The centripetal force of gravity is balanced by the centrifugal force due to their motion.
C)
They are free falling.
D)
They are in orbit above Earth's atmosphere; therefore, there are no drag forces acting on the space craft.
Answer:
C) They are free falling.
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Attribution:
Introduction to Mechanics. The Saylor Academy 2014, http://www.saylor.org/courses/phys101/
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