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What is the relative speed of the spacecraft according to astronaut when He traveled for 8 years and according to earth observer is 10 years?
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An astronaut leaves a spaceship that is moving through free space to adjust an antenna Will the spaceship leave the astronaut behind?
No because the astronaut's relative velocity will be approximately the same as that of the spacecraft.
Motion relative to observers frame of?
Motion is relative to an observer's frame of Reference.
An object is in motion if it changes position relative t a?
Observer.
If time is relative to the observer then is the future and past happening right now?
If time is relative to the observer, then "right now" has no meaning. We originally meant that as a facetious response, but that fact is actually the real basis for the whole concept of Relativity ... that "simultaneous" depends on the observer.
How does the relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewak?
as the motorcycle approaches the observer, the frequency increases.
How does the frequency measured in front of the source appear to the observer compared to the frequency measured from behind?
The frequencies are the same, unless the source is moving relative to the observer.
When an astronaut lands on the moon what is his mass?
His mass does not change, only his relative weight.
A 200 pound astronaut and equipment move with a velocity of 2msec toward an orbiting spacecraft How long will the astronaut need to fire 100 N rochet to stop the motion relative to the spacecraft?
If the man and his equipment weigh 200 pounds on the earth's surface,then their mass is 90.719 kg. (rounded)The acceleration of the package due to a net force of 100N is [ A = F/m ] = 100/90.719 = 1.102 m/s2. (rounded)With this acceleration applied in the direction opposite to his initial velocity,it takes [ V/A ] = 1.814 seconds to stop. (rounded)
What is the redshift star?
The redshift is caused by relative motion that increases the distance from the source to the observer. The faster the source of light is moving away to the observer, the greater the redshift
Is it possible to move a source of sound relative to a stationary observer so that there is no shift in the frequency of the sound?
For the sound from a source not to be shift in frequency , the radial velocity of the source to the observer must be zero : that is the source must not be moving towards or away from the observer
Does the Doppler Effect occur when both the source and observer are moving at the same velocity?
No. There has to be a relative velocity.
Is earths surface in constant motion?
Yes, relative to any observer not attached to the earth's surface.
