Well hi. im in 7th grade and im learning physics. Me and my friend saw a vid on 1 of newton's theroys. It was "time goes slower while moving faster", if i recalled right. and me and my friend wanted to go past the speed of light to break the time barrier and make time stop from newton's work and theroy. So im stuck on 1 question which has less friction a cone, a wedge, or a sphere? and i need to know of a matirial that can stand extreme temps. thx in advance.