Muchidzidzo fundoyetsimba, Simba reNhekairo (kinetic energy in English) zvinoreva simba rinokonzera mitumbi kufamba kana kuti simba riri kukonzera mutumbi kufamba. Simba reNhekairo rinometsurwa neenzane inotevera: Simba reNhekairo = (m x v2)/2 Apa m anomirira huremu. V anomirira muchacha, kana spidhi. Shoko rokuti kutekaira rinoreva kufamba kumutauro wechiBudya chinotaurwa kwaMutoko. Saka shoko rokuti nhekairo ndiro riri kuturikirwa pano kureva motion or movement kuEnglish. Kana rhekeni yatakura dombo pachikumbha igochitatamurwa inenge yave nesimba rechakunga. Paya pokuti dombo raradanurwa , simba rechakungariri parhekeni rinoshanduka kuva simba renhekairo.