Modelová Otázka ID 3192 - 
Začne‑li na těleso v klidu působit konstantní, nenulová výsledná síla, lze pohybové vlastnosti tělesa popsat následovně:
Správná odpověď je: C
Dle Newtonova prvního pohybového zákona, zvaného také „zákon setrvačnosti“, setrvává každé těleso v klidu nebo rovnoměrném přímočarém pohybu, pokud není nuceno tento stav změnit působením vnější síly. V tomto případě je pohybový stav tělesa ovlivňován konstantní vnější silou, takže se těleso bude pohybovat rovnoměrně zrychleným pohybem (pro zrychlení platí 
, kde síla F i hmotnost tělesa m se nemění) a jeho kinetická energie poroste.
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