(Solved): Can someone help me asap please? In a physics laboratory, a subatomic particle has a rest energy of ...

Can someone help me asap please? In a physics laboratory, a subatomic particle has a rest energy of 1.28 MeV and a total relativistic energy of 1.72 MeV with respect to the laboratory's frame of reference [A5] a. Calculate the particle's rest mass [2] b. Calculate the particle's Kinetic energy in the laboratory's frame in joules [2] c. Determine the particle's speed in the laboratory [1]