|
Two twins are 25.0 years old when one of them sets out on a journey through space at nearly constant speed. The twin in the spaceship measures time with an accurate watch. When he returns to harth, he claims to be 31.0 years old, while the twin left on harth knows that she is 43.0 years old. What was the speed of the spaceship? |
| New search. (Also 5349 free access solutions) |