The escape velocity of a particle of mass m varies as
A famous relation in physics relates moving mass m to the rest mass m0 of a particle in terms of its
speed v and the speed of light c. (This relation first arose as a consequence of special theory of relatively
given by Albert Einstein). A boy recalls the relation almost correctly but forgets where to put the constant
c. He writes m=m0(1−v2)12. Guess where to put the missing c?