6) Santa's sleigh flies at 3 times the
speed of sound. That's a
whopping 1.04 x 10 m/s. Santa's
sleigh actually makes a Sonic Boom
when it surpasses the speed of
sound! (keep your ears open for
that on Christmas Evel). How
much kinetic energy must Santa's
sleigh have if its mass is 7,500 kg?
(Let us assume he is not carrying
ALL 7.5 billion presents at once!)