You need at least enough speed to roatate you hips back in a tuck posion, and enough height so that you will not fall back on your head! :p
I can! I do gymnastics and i am very good at it! I can do a backtuck! As long as you practice and take in precaustions.
yes it is
Not at all, if anything that is an advantage. When you do a backtuck you have to be off the ground, so if your small it takes more effort then if you are tall.
preferaby a 126kb speed
It may help you get a feel for the basic back tuck positioning, but it won't really help you master it on the ground. Doing it on a trampoline first will help you a lot more.
a freakin bunch
2.1 liters
F stands for forward speed. = stands for how much forward speed is needed. M stands for mass multiplied with A, which stands for accecleration
Mass of a body and its speed are needed to calculate kinetic energy. Kinetic energy of an object = mv2/2 This formula is useful only when object's speed is much less than speed of light.
Four times as much. The relevant formulae are F = ma, and a = v2/r.
Force
Divide 715 by 110.