### E=mc^{2} special Relativity equation:

The energy of the object E_{(j)} in joules is equal to the mass of the object m_{(kg)} in kilogram and multiply square of the speed of the light c^{2}_{(m/s)} in meter per second.Hence the E=mc^{2} special Relativity equation can be written as

E_{(j)}=m_{(kg)} *c^{2}_{(m/s)}

Where

E= energy of the object

M =mass of the object

C= speed of the light and value is 299,792,458 m/s

### Example:1

Calculate the Einstein mass energy if the mass is 25kgs?

### Answer:

Given that

Mass of the object m =25kgs

Speed of the light c =3*10^{8} m/s

Energy of the object E= m*c^{2}

E=25*(3*10^{8})^{2}

E=25*9*10^{16}

E=2.25 *10^{18}

Therefore, energy of the object is 2.25 *10^{18} joules

### Example:1

Calculate the Einstein mass energy if the mass is 32kgs?

### Answer:

Given that

Mass of the object m =32kgs

Speed of the light c =3*10^{8} m/s

Energy of the object E= m*c^{2}

E=32*(3*10^{8})^{2}

E=32*9*10^{16}

E=2.88 *10^{18}

Therefore, energy of the object is 2.88 *10^{18} joules