In our inertial reference frame, we see a particle accelerating with a velocity dx/dt = ( 1 - e-gt )1/2 in units where c = 1 (speed of light) When we watch the particle's trajectory from t=0 to t=T, how much time passes in the particle's non inertial frame? Now express the answer such that T and the time have units of seconds instead of meters What's the 4-velocity in units c=1?

In our inertial reference frame, we see a particle accelerating with a velocity dx/dt = ( 1 - e-gt )1/2 in units where c = 1 (speed of light) When we watch the particle's trajectory from t=0 to t=T, how much time passes in the particle's non inertial frame? Now express the answer such that T and the time have units of seconds instead of meters What's the 4-velocity in units c=1?

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