Modelová Otázka ID 3185 - 
Automobil se začal ze stoje rozjíždět po rovné silnici rovnoměrně zrychleným pohybem. Jak velké rychlosti automobil dosáhl za 10 sekund, dosáhla‑li hnací síla na styku pneumatik s vozovkou 6 000 N a automobil měl hmotnost 1 500 kg?
Správná odpověď je: B
Automobil se pohyboval rovnoměrně zrychleným pohybem bez počáteční rychlosti. Zrychlení tohoto pohybu můžeme vypočítat ze vzorce pro sílu jako 
, kde platí:
a = 6 000 N/1 500 kg = 4 m · s−2.
Rychlost rovnoměrně zrychleného pohybu bez počáteční rychlosti lze vypočítat podle vzorce 
. Výsledkem je tak rychlost:
v = 4 · 10 m · s−1 = 40 m · s−1.
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