This video explains it well.
Like I said:
for fast things, it's about 1 point a few zeroes 1 figNewtons, or you can convert that to graham-cracker force.
As you get faster - gamma goes higher, momentum = gamma * mass * velocity. this video shows this gamma value - and the effect is on the...
As you go faster, you get heavier (so you need more energy to go faster)
So, 0-10, "five figNewtons"
10-20, "five point, a lot of zeroes, one figNewtons"
20-30... so the faster you go the more figNewtons it requires to go faster again.
e=mc2, the more energy, the more mass. no idea how it...