Answer:
Simply energy is the ability to do work.
Energy is the capacity of a physical system to perform work. Energy exists in several forms such as heat , kinetic or mechanical energy, light, potential energy , electrical, or other forms.
The Sun is the main source of energy on Earth. There are other sources of energy like
- coal, geothermal energy,
- wind energy,
- biomass,
- petrol,
- nuclear energy, etc.
Energy is classified into various types based on sustainability as renewable sources of energy and non-renewable sources of energy.
Explanation:
[tex]p = \frac{w}{t} \\ where \: \: w = workdone \\ \: \: \: \: \: \: \: \: t = time \: taken[/tex]
[tex]kinetic \: energy(k.e) = \frac{1}{2} {mv}^{2} [/tex]
[tex]potential \: energy \: = \: mgh[/tex]
hope it helped you...
