Question

Please help me with this, But I can’t decide if it’s A or B. Please explain !!!

Answer 1

`m=\frac{M}{\sqrt{1-(v^(2) )/(c^(2) ) } } \\\\\\m{\sqrt{1-(v^(2) )/(c^(2) ) }=M`

`\sqrt{1-(v^(2) )/(c^(2) )} =(M)/(m) \\\\\\1-(v^(2) )/(c^(2) )=(M^(2))/(m^(2)) \\\\\\-(v^(2) )/(c^(2) )=(M^(2))/(m^(2)) -1\\\\v^(2)=(-c^(2)) ((M^(2))/(m^(2)) -1)\\\\v=\sqrt{(-c^(2)) ((M^(2))/(m^(2)) -1)} =\sqrt{(c^(2))(-1)((M^(2))/(m^(2)) -1)} =c\sqrt{(-1)((M^(2))/(m^(2)) -1)} =c\sqrt{1-(M^(2))/(m^(2))}`

I would think it's A ¯\_ (ツ)_/¯

Answer 2

I think it's the letter A.