Answer:
The speed of the stone is 0.6138 c.
(B) is correct option.
Explanation:
Given that,
Mass of stone m= 0.6
Relativistic mass = 0.76
We need to calculate the speed
Using formula of rest mass
[tex]m_{r}=\dfrac{m_{0}}{\sqrt{1-\dfrac{v^2}{c^2}}}[/tex]
[tex]v^2=(\dfrac{m_{0}^2}{m_{r}^2}-1)c^2[/tex]
Put the value into the formula
[tex]v^2=(\dfrac{0.6^2}{0.76^2}-1)\times c^2[/tex]
[tex]v=\sqrt{0.37673c^2}[/tex]
[tex]v=0.6138c[/tex]
Hence, The speed of the stone is 0.6138 c.
