Recent content by yang32366

I am unsure how this help. Velocity of light is never changing. Velocity of mass and so velocity of mass’s frame (velocity of S’ frame in special relativity language) is changing.

Source = John R. Taylor, Classical Mechanics, page 651 + page 677 Trying to solve, A mass m is thrown from the origin at t=0 with initial three momentum p_0 in the y direction. If it is subject to a constant force F_0 in the x direction, find its velocity \mathbf{v} as a function of t, and by...