Relativistic Momentum and Maximum Velocity – Practice Questions:1) Calculate the momentum of an electron moving at 2.45 × 108 m/s relative to a target:2) At what speed is a particle moving if its relativistic mass is 4.5 times its rest mass? Quick Answers:1) 3.87 × 10-22 kgm/s2) 2.92 × 108 m/s Worked Answers: