(3-16)  Cormorant has a mass of 2.5 kg.

①   Calculate the total rest energy of a Cormorant particle (the speed of light is 3.00 x 108 ms-1). Compare this with the energy released when 1 tonne of TNT is exploded (4.18 x 109 J).

②  By what percentage does his total energy increase if he is flying at a speed of 2.0 ms-1 ?