The sun was created at the center of the accretionary disk when the temperature became high enough for to occur. fusion fission combustion radiation

Fusion

The process of nuclear fusion is what drives the sun. During this process, smaller nuclei are combined at extremely high temperatures to form heavier nuclei. The primary collisions occur between hydrogen nuclei which combine to form helium nuclei, making hydrogen the fuel for stars and the most abundant element in the universe. The process of fusion requires a lot of energy to be started but also releases huge amounts of energy.

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2