Acceleration due to gravity (ag) = 9.8 m/s2. An object is dropped from a bridge. How fast will the object be falling in 6.3 seconds?

V = 61.74m/s

Explanation:

Given the following data;

Acceleration due to gravity = 9.8m/s²

Time, t = 6.3 secs

Since it's a free fall, initial velocity = 0

Thus, to find the final velocity, we would use the first equation of motion;

Substituting into the equation, we have;

V = 61.74m/s

Therefore, the final velocity is 61.74m/s

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

second mirror gathers light from a faraway object and reflects it to another mirror. - a.