sqrt[1 -(v/c)^2] = 0.8
1 - (v/c)^2 = 0.64
(v/c)^2 = 0.36
v = 0.6 c
60% of the speed of light would be required.
how fast would you have to be traveling at in a spaceship in order to appear to age 20% slower than your classmate left behind on earth
4 answers
Sorry can you explain how you get 0.64? Square rooting both sides? sqrt of 0.8 is 0.89 on the calculator. Please help.
Nevermind lol.. you squared it.
Nevermind lol.. you squared it.