With what speed will a clock have to be moving in order to run at a rate that is one half the rate of a clock at rest?

Posted by Mona

Answer:

Using the formula for Relativistic Time (according to Special Theory of Relativity)

√[1 – (v²/c²)] = ½ → v² = (3/4)c²

v = [√3/2]*c = .866c