Passengers of a bus move forward when it stops suddenly. Why??

Newtons first law of motion: Objects in motion stay in motion unless acted upon by an external force.

Explanation:

The additive primary colors are red, green and blue (RGB). Combining one of these additive primary colors with equal amounts of another one results in the additive secondary colors of cyan, magenta and yellow. Combining all three additive primary colors in equal amounts will produce the color white. Remember combing additive colors creates lighter colors, so adding all three primary colors results in a color so "light" it's actually seen as white. Although that may seem strange, if you think of the absence of all light equaling black, it begins to make sense that adding different colors creates white.Light colors are combining two or more additive colors together which creates a lighter color that is closer to white. Examples of additive color sources include computers and televisions.