Answer:
[tex]c = 3\times 10^{8}\ m/s[/tex]
Step-by-step explanation:
According to the theory of mass-energy equivalence:-
[tex]Energy=mass\times c^2[/tex]
Where, c is the speed of the light
Given that, Mass = 1 kg
Energy = [tex]9\times 10^{16}\ J[/tex]
So, applying in the above equation as:-
[tex]Energy=mass\times c^2[/tex]
[tex]9\times 10^{16}\ J=1\ kg\times c^2[/tex]
Solving, we get that:-
[tex]c = 3\times 10^{8}\ m/s[/tex]
