According to the doppler affect what happens when a light surfacemoves further away from an observer

The correct answer is The electromagnetic waves appear more in red color.
Since red is at the low-frequency end of the visible spectrum, we say that light from a receding star is shifted toward red, or redshifted.

A. they hold atoms  together with a molecule.its a force that exist between molecules. hope this .

The objects do not reach terminal velocity         there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.