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o masina are la poenire acceleratia de 5m/s la 2
Calculati in cat timpea atinge biteza de 90km/h


Răspuns :

v=90 km/h=25 m/s

vo=0

a=Δv/Δt=(v-vo)/t<=>a=v/t=>t=v/a=25/5=5 s