Question
How fast would you need to be travelling relative to an observer in order for them to see a 15% increase in your mass?
Answers
Damon
M/m = 1/sqrt(1-v^2/c^2) = 1.15
1 /[1- v^2/(9*10^16)] = 1.15*2
1 /[1- v^2/(9*10^16)] = 1.15*2