A rocket of proper length L flies at speed 0.5c. The rocket starts with its front end at x=0. A laser is fired from the front to the back of the ship. At the instance the laser is fired, t=t'=0. i) What time does it take the laser to reach the back of the ship in the Earth's frame ? ii) What time does it take for the rear of the ship to pass x=0. (i) Contracted length L' = L YC (ii) 10.5c