Gesekan dapat ditimbulkan oleh dua

Gesekan dapat ditimbulkan oleh dua permukaan benda yang saling bersentuhan. Dampak dari adanya gesekan adalah terjadinya panas, besarnya energi panas yang timbul dapat bergantung dari tingkat kekasaran permukaan benda yang bergesekan, semakin kasar permukaan suatu benda maka semakin besar pula panas yang ditimbulkan.
Sebagai contoh pada zaman dahulu orang membuat api dengan cara menggesek-gesekan dua buah batu, gesekan pada batu menimbulkan panas. Contoh lain bahwa gesekan dapat menimbulkan panas adalah gesekan antara meteor yang jatuh ke bumi dengan lapisan atmosfir bumi, meteor akan terbakar karena gesekan antara keduanya.

Hasil (Inggris) 1:

Friction can be caused by two surfaces come into contact each other objects. The impact of friction is the occurrence of heat, the amount of heat energy arising from the level can rely on surface roughness of objects are rubbing against a rough surface, the more an object then the greater the heat also caused.
For example in ancient times people making fire with two stones menggesek-gesekan way, friction on the rocks give rise to heat. Another example that friction can cause heat is friction between meteor that fell to Earth with a layer of Earth's atmosphere, the meteor will burn because of the friction between the two.

Hasil (Inggris) 2:

Friction can be caused by two objects that are touching the surface. The effect of friction is the heat, the amount of heat energy that can arise depending on the level of surface roughness rub against objects, the rough surface of an object, the greater the heat generated.
example in ancient times people make fire by rub two stone fruit, friction causes heat in the stone. Another example that can cause heat friction is friction between the meteor that fell to earth with a layer of Earth's atmosphere, the meteor will burn due to friction between the two.