Only number 1 and 2 revise. The red color comment is written by my professor.

*Please write your explain and tell me where I'm wrong and what did you change. Thank you

1. A rocket is moving at 1/4 c relative to Earth. At the center of this rocket, a light source suddenly flashes. To an observer at rest in the rocket a. the light pulse will reach the front of the rocket at the same instant that it reaches the back of the rocket. b. the light pulse will reach the front of the rocket before it reaches the back of the rocket. c. the light pulse will reach the front of the rocket after it reaches the back of the rocket.

2. A rocket is moving at 1/4 c relative to Earth. At the center of this rocket, a light source suddenly flashes. To an observer at rest on Earth a. the light pulse will reach the front of the rocket at the same instant that it reaches the back of the rocket. b. the light pulse will reach the front of the rocket before it reaches the back of the rocket. c. the light pulse will reach the front of the rocket after it reaches the back of the rocket.

A rocket is moving at I!!! :3 relative to Earth. At the center of this rocket, a light source suddenly ashes. To an observer at rest in the rocket a. the light pulse will reach the front of the rocket at the same instant that it reaches the back of the rocket. b. the light pulse will reach the front of the rocket before it reaches the back of the rocket. c. the light pulse will reach the front of the rocket after it reaches the back of the rocket. A rocket is moving at I!!! c relative to Earth. At the center of this rocket, a light source suddenly ashes. To an observer at rest on Earth a. the light pulse will reach the front of the rocket at the same instant that it reaches the back of the rocket. b. the light pulse will reach the front of the rocket before it reaches the back of the rocket. c. the light pulse will reach the front of the rocket after it reaches the back of the rocket. 1. A rocket is moving at 1/4 c relative to Earth. At the center of this rocket, a light source suddenly flashes. To an observer at rest in the rocket the light pulse will reach the front of the rocket at the same instant that it reaches the back of the rocket. b. the light pulse will reach the front of the rocket before it reaches the back of the rocket. c. the light pulse will reach the front of the rocket after it reaches the back of the rocket. speed of light is invalert this independent, of quad of source of observer: The dicks in the " rocket. signs of reference, speed of light is constant, light will . hard John P Schaub uppeered to hit both front one back parts simulanamely at some time Say more details here about why. A rocket is moving at 1/4 c relative to Earth. At the center of this rocket. a light source suddenly flashes. To an Because the speed of light is constant observer at rest on Earth a. the light pulse will reach the front of the rocket at the same instant that it reaches the back of the rocket. for #2 as well, but your answers are b. the light pulse will reach the front of the racket before it reaches the back of the rocket. different. the light pulse will reach the freed of the rocket after it reaches the back of the rocket. the speed in backward direction is wore compared to what is in former direction, Hoke the time tolen to hit the back is buy comparision to what John P Schaub is headed to reach the stand of hocked Not true. The speed of light is the 3. An astronaut in an inertial reference frame measures a time interval at between her heartbeats. What will observers in same in all IRFs--not some light faster all other inertial reference frames meanare for the time interval between her heartbeats? more than At and some slower. c less than At d The answer depends on whether they are moving toward her or away from her. Let's the revotive interns of' At inertial veteranle thang interpol is = at some Location is given . s, at is only oftest by r as we don't have bigger / higher speed Jlisted : due to ? will get a the muter this +31 shows, Ol' or At so more tou at