Explanation:
Given that,
Speed of particle = 0.720 c
Momentum = 4.350\times10^{-19}\ kgm/s[/tex]
(I). We need to calculate the mass of the particle
Using formula of momentum




We need to calculate the rest mass of particle
Using formula of rest mass

Where,
= rest mass
Put the value into the formula



(b). We need to calculate the rest energy of the particle
Using formula of energy

Put the value into the formula


(c). We need to calculate the kinetic energy of the particle
Using formula of kinetic energy




(d). We need to calculate the total energy of the particle
Using formula of energy

Put the value into the formula


Hence, This is the required solution.