What would be the mass of the body at rest, if it explodes into two ob – McqOptions

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1.	What would be the mass of the body at rest, if it explodes into two objects of mass 2 kg each moving with a speed 0.8c relative to the original body?
A.	4 Kg
B.	5.4 Kg
C.	6.2 Kg
D.	6.7 Kg
Answer» E.

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