Two astronauts, of masses 60. kg and 80. kg, are initially at rest in outer space. They push each other apart. What is their separation after the heavier astronaut has moved 12. m?
A) 21. m
B) 24. m
C) 16. m
D) 9. m
E) 28. m
Question 2
State the two fundamental postulates of Einstein's Special Relativity.
What will be an ideal response?