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Physics 3710 – Intermediate Modern Physics, Spring 2018

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Physics 3710 – Problem Set #5 Relativistic dynamics, I

Problems 1-5 refer to: One mass, m1 = 1 (in some units), collides head-on with a second mass, m2 = 2 , and sticks to it, forming a composite body of mass M . There are no external forces. Observer O records m1 as initially moving with dimensionless velocity, u1 = +0.9 in the x - direction, while m2 is recorded to be at rest. Do not make unwarranted assumptions about M , please; that’s the point of this set of problems.

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