In class we I argued that the Lorentz Transformations also work for the Energy- Momentum 4-vector. Consider an object of rest mass m. In frame S it is at rest. Frame S' moves with speed 0.8c in the +x direction with respect to S. A. What is the energy and momentum of the object in S'? What is the energy and momentum in S? Write your answers in terms of m.
In class we I argued that the Lorentz Transformations also work for the Energy- Momentum 4-vector. Consider an object of rest mass m. In frame S it is at rest. Frame S' moves with speed 0.8c in the +x direction with respect to S. A. What is the energy and momentum of the object in S'? What is the energy and momentum in S? Write your answers in terms of m.
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Transcribed Image Text:4.3 Lorentz Transformations for Energy and Mo-
mentum
In class we I argued that the Lorentz Transformations also work for the Energy-
Momentum 4-vector. Consider an object of rest mass m. In frame S it is at
rest. Frame S' moves with speed 0.8c in the +x direction with respect to S.
A. What is the energy and momentum of the object in S'? What is the energy
and momentum in S? Write your answers in terms of m.
B. Show that in this case:
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