Question

at what speed would the mask of an electron becomes double of it's rest mass
a 0.5c
b 0.707c
c 0.866c
d 0.99c​

Answer 1

speed does an electron's energy become twice its mass?” as γ=1/1−v2/c2−−−−−−−−√=E/mc2. Take the square root again and you get the relevant speed as a fraction of c.

Answer 2

Answer:

0.5c is the correct answer.

Hope it helps u