A man walks 8 m east in 12 seconds . What is the man's velocity ?

0.67m/s due east

Explanation:

Given parameters:

Displacement of the man  = 8m east

Time taken  = 12s

Unknown:

Velocity of the man  = ?

Solution:

The velocity of a body is the rate of displacement per time;

         Velocity  =  

       Velocity  =   = 0.67m/s due east

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:

he kicked it 10 feet straight up into the air? i think this works.