An astronaut inside a spacecraft is in a state of weightlessness. This implies that?
Correct answer: D. The astronaut and the spacecraft are both in a free-failing state
- A. The mass of the astronaut is reduced to zero
- B. Gravity inside the spacecraft ceases to act
- C. The astronaut is outside the influence of the earth's gravitational force
- D. The astronaut and the spacecraft are both in a free-failing state
Explanation
Weightlessness means the astronaut and spacecraft are falling together under gravity, so no supporting force is felt. Earth’s gravity still acts, and the astronaut’s mass does not become zero.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Physics in Daily Life
Everyday physics explains motion, force, work, power, pressure, heat, light, sound and electricity through familiar devices and natural events. Topics include simple machines, friction, expansion, reflection and refraction, lenses, household circuits, electrical safety and magnetism, with mass distinguished from weight and heat distinguished from temperature.
Practise Physics in Daily Life
343 free Physics in Daily Life MCQs from Everyday Science, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Everyday Science questions like this
Everyday Science is on 40 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Physics in Daily Life questions
The sun appears red at sunrise and sunset while it appears white at noon, because
An iceberg is floating in sea. How much of its mass will remain above the surface of water?
T.V. transmission cannot cover a very large area because
A lake starts freezing because of the cold atmosphere. It will first freeze
Cobalt is a material which is ?
A body can escape the gravitational pull of the earth if it is thrown up with a velocity of?