If a mixture of red and green light hits the human eye, it will create the visual impression of "yellow .e, not a mixture of red and green) hits the the same happens if light of the spectral color yellow (i eye. why can't the eye tell these obviously different situations apart?

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.