Particle-X has a speed of 0.730 c and a momentum of 6.240x10-19 kgm/s. What is the mass of the particle? 2.849x10^-11 kg Hints: The classical momentum of an object is the product of its mass and its velocity. How does the relativistic momentum look like compared to the classical momentum? - Incorrect. T What is the rest energy of the particle? 1.75x10^6 J Hint: This is THE very famous relationship between mass and energy attributed to Einstein. Incorrect. What is the kinetic energy of the particle? .812x10^6 J Hint: The relativistic kinetic energy contains the rest energy and the gamma factor in a tricky way. Be careful! Incorrect. What is the total energy of the particle? 2.56x10^6 J Hint: The total energy is the sum of the rest energy and the kinetic energy. Incorrect.

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