There are a lot of multiples of 4. I'll list you as much as I can :) 4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100. I'm sorry, I know I listed a lot. You probably didn't need that much :)
From conservation of energy a body at rest posses energy called Potential Energy under which it acquired at particular position of the body i.e at rest
Then as soon body starts moving with a certain speed "v" there is conservation of energy from Potential energy to Kinetic energy given as product of a half with mass of the body and square of its velocity.
In formular K.E= 1/2mv^2 where m stands for mass of the body and v is the speed of the body.
