What will be the momentum of α – particle when it is moving with velocity of 0.8c?
1
\(20.72 \times {10^{ - 20}}\;kg\;m/{s^2}\)
2
\(25 \times {10^{ - 20}}\;kg\;m/{s^2}\)
3
\(26.72 \times {10^{ - 19}}\;kg\;m/{s^2}\)
4
\(26.72 \times {10^{ - 20}}\;kg\;m/{s^2}\)