Answer:
The speed of the star is 
Explanation:
Spectral lines will be shifted to the blue part of the spectrum if the source of the observed light is moving toward the observer, or to the red part of the spectrum when it is moving away from the observer (that is known as the Doppler effect).
The wavelength at rest is 121.6 nm (
)
Due to that shift the velocity of the star can be determined by means of Doppler velocity.
(1)
Where 
is the wavelength shift, 
is the wavelength at rest, v is the velocity of the source and c is the speed of light.
In this case 
is equal to 120.2 nm.
Hence, the speed of the star is .
Notice that the negative velocity means that the star is moving toward the observer.
penguins! so momentum is based on mass and velocity, the advantages is that they have stored mass in the form of like fats to keep them warm however they are built to slide basically so that there is less friction when they travel so sideways their bullet like shape helps increase velocity so they have both mass and considerable velocity!
Answer:
ish all usual isaiah or easier fall iF.Hg. diff potty off radial ish usually appraisal
Acceleration is in the direction of motion
