Question

How much energy (in joule) is produced if 1 kg mass is converted into energy .

GSEB - Class 9 Chapter - 1. Work, Energy and Power Page 10

Answer 1

The formula for Energy or E is equal to m multiplied by c to the power 2. 
Here, c is equal to 3E8 m/s 

C to the power 2 is equal to 9E16 m power 2/ s power 2 

Here, m is equal to 1 kg 

Finally, E is equal to 1 kg multiplied by 1m/s to power 2 multiplied by 9E16 m 

Which results in 9E16 Joules