Relativistic Kinematics II

For a constant (proper) acceleration spaceship, what are its position, speed, and acceleration relative to an inertial observer (in terms of coordinate and proper time)? Relativistic Kinematics I:    • Relativistic Projectile I   0:00 - Introduction 2:49 - Newton's 2nd Law 3:59 - The velocity 7:51 - The position 13:20 - The acceleration 17:43 - Conversion to proper time 25:40 - Kinematics with proper time Cf. "Solved Problems in Classical Mechanics" 15.13