An observation of the red shift of galaxies suggests that the universe is
a. expanding b. contracting c. reversing d. stagnant

Mysteriously, all of the distant galaxies show a red shift in their light,
and the farther a galaxy is from us, the greater its red shift is.

The only explanation we have now for a red shift is that the source
of the light is moving away from us.

So the observations of the red shifts of distant galaxies suggest that
the universe is expanding.

If somebody discovers something else tomorrow that can shift the
observed wavelength of light toward the red, then the whole idea of
the big bang and the expanding universe will be out the window.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

Iam on that question know can you tell me the answer i am realy strruglingasap