An object of rest mass 6 Kg is moving with a speed of 0.8c. Its effect – McqOptions

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1.	An object of rest mass 6 Kg is moving with a speed of 0.8c. Its effective mass is ____________
A.	6 Kg
B.	8 Kg
C.	10 Kg
D.	12 Kg
Answer» D. 12 Kg

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