Răspuns:
v₀=25m/s
t=20s
a)
La oprire viteza devine nula.
v=0
v=v₀-at
v₀-at=0
at=v₀
a=v₀/t
a=25/20=1,25m/s²
b)
d=v₀t-at²/2
d=25×20-1,25×20²/2=500-1,25×400/2=500-250=250
d=250m
Sper ca am putut ajuta!
