I would say people never belived in something else than friction...
They may not have had the understanding for what exacetly is going on but I think menkind realized pretty soon, that there is something like gravity.
It is just logical for us, that there is friction, I couldn't think of any other theory about that topic.
friction fires
They believe your mom
nothing.
1.static friction 2.rolling friction 3.sliding friction You can believe me because i just learned it in school(grade8)
nbn
They believe that they will either go to heaven or hell
No I don't believe that that people could have life before 1000000000, I believe that this world has only been in form for around 6,000 years.
I believe that the most effective and common way to inspect a friction weld is by ultrasound.
All types of friction act opposite to the direction of motion but static friction is the friction present before motion occurs.
Friction of the skin can cause chaffing and chapping. The friction can cause bed sores in people that are bedridden, and irritation in people that are active.
Gravity and friction there are others also like magnetism for example..
The people believed that god was very angry and was punishing them