The unit of energy is a derived quantity. why​

Energy is the tendency to do work.

Explanation:

Energy unit is Joule

1 Joule means 1 kgm²/s²

Energy =Kinertic energy

=1/2 mv²

unit= kgm²/s²

So energy unit is derived unit.

It was given the name Newton(N). From this ,the derived quantity of energy is defined,as the work produced when the unit of force causes a displacement equal to the unit of length of its point of application along its direction. It was given the name Joule(J).

So, the unit of a energy is a derived quantity.

what type of charge does it have? negative

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.