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Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body.(B) An astronaut orbiting the Earth does feel weightless because there is no ground or normal force to counteract the force of gravity. Thus, the astronaut is falling. However, since the astronaut is also moving forward super fast, he/she continuously falls around the Earth rather than crashing into the Earth.Orbiting astronauts do not experience a force of gravity; this explains why they feel weightless.
Why do astronauts seem weightless in orbit?
(B) An astronaut orbiting the Earth does feel weightless because there is no ground or normal force to counteract the force of gravity. Thus, the astronaut is falling. However, since the astronaut is also moving forward super fast, he/she continuously falls around the Earth rather than crashing into the Earth.
Which of the following statements explains why astronauts feel weightless while orbiting the Earth?
Orbiting astronauts do not experience a force of gravity; this explains why they feel weightless.
Why Are Astronauts Weightless?
Images related to the topicWhy Are Astronauts Weightless?
Are astronauts in orbit weightless explain your answer quizlet?
Astronauts in orbit are without support forces and are in a continual state of weightlessness.
What does it mean to be weightless in space?
The sensation of weightlessness, or zero gravity, happens when the effects of gravity are not felt. Technically speaking, gravity does exist everywhere in the universe because it is defined as the force that attracts two bodies to each other. But astronauts in space usually do not feel its effects.
Why are astronauts weightless in the space station quizlet?
Why are astronauts weightless in the space station? because they are in a constant state of free fall around the Earth. Newton’s 1st law: An object remains in motion at constant velocity, or remains at rest, unless acted upon by a net force.
What is free fall and why does it make you weightless briefly describe why astronauts are weightless in the International Space Station?
Briefly explain why astronauts are weightless in the space station. Free-fall: falling without any resistance to slow you down. The floor drops away at the same rate that you fall, allowing you to float freely above it, causing you to be weightless. -ex) A car parked on a flat street won’t suddenly start moving.
Why would you feel weightless if you were on a spacecraft orbiting the Earth quizlet?
Astronauts orbiting Earth in a spacecraft feel weightless in space because: They are in a constant free fall around the Earth. How much would the force of Earth’s gravity at its surface differ if the Earth’s volume were increased 125 times while its mass was increased 25 times? No difference.
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Why are astronauts in space said to be weightless but not massless?
According to our textbook, weight is described as “The force that gravity exerts on the object.” There is zero gravity in space, so therefore the astronauts are weightless. But they are not massless, because mass is an indicator of the amount of matter in it. Mass is measured independent of gravity.
In which of the following cases would you feel weightless?
The correct answer is C. while falling from an airplane with your parachute open.
Why do you feel weightless on the moon quizlet?
Astronauts appear to weightless on the moon because there is no gravity, or there is less gravity than there is on Earth. According to the universal law of gravity, everything has a gravitational force. The strength of gravitational force is dependent on the masses of and distance between two objects.
Why do astronauts feel weightless ?
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Why is it incorrect to say that astronauts are weightless in space while orbiting Earth in a space shuttle quizlet?
The statement is wrong. First, gravity is the centripetal force that keeps the astronauts and their spacecraft in orbit around the Earth, so the astronauts aren’t beyond gravity’s influence.
Why does an astronaut float in the International Space Station quizlet?
Because the downward and forward forces are nearly equal, the astronauts are not pulled in any specific direction, so they float.
How do you explain weightlessness in an artificial satellite?
EXPLANATION: Weightless is felt inside artificial satellites because the gravitational force on the satellite due to the planet provides the centripetal force to keep it revolving in the orbit.
What is the effect of weightlessness?
One of the major effects of weightlessness that is more long-term is the loss of muscle and bone mass. In the absence of gravity there is no weight load on the back and leg muscles, so they begin to weaken and shrink.
What is an example of weightless quizlet?
You are standing on a scale in an elevator and the cable breaks. The scale will show zero, and you will experience “weightlessness,” but the earth is still pulling you towards it, so you still have weight, but you feel a weightless sensation. The scale is no longer pushing against you so it doesn’t show a reading.
What is free fall and why does it make you weightless?
While free-falling, gravity is the only force acting on the body. As gravity cannot be felt without any opposing force, there would be no sensation of it. This is the reason why we feel weightless in a state of free fall.
How much percent does an astronaut grow in space?
The human body can grow up to three percent taller in space – that’s about two inches for a six-foot astronaut.
Why do astronauts appear to float more above the surface of the moon or bounce as they walk on the moon?
Because gravity on the moon is less than gravity on Earth, the astronauts bounce as they walked on the moon’s surface.
Which of the following properties of an astronaut changes when he she is standing on the Moon?
Which of the following properties of an astronaut changes when he or she is standing on the Moon, relative to when the astronaut is standing on Earth? d. Nothing changes.
Mr. Graham Explains why Astronauts Seem to be \”Weightless\” When in Orbit Around the Earth.
Images related to the topicMr. Graham Explains why Astronauts Seem to be \”Weightless\” When in Orbit Around the Earth.
Which of Newton’s laws states that if an unbalanced force acts on an object then the object’s motion changes?
In conclusion, Newton’s second law provides the explanation for the behavior of objects upon which the forces do not balance. The law states that unbalanced forces cause objects to accelerate with an acceleration that is directly proportional to the net force and inversely proportional to the mass.
Which of the following would cause the Earth’s gravitational force on the Moon to increase by the largest amount?
Which of the following would cause the Earth’s gravitational force on the Moon to increase by the largest amount? Move the moon to half its current distance from the Earth.
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