t=1 s
s=8 m
Vo=0
s w czwartej sekundzie = ?
s= Vo*t+0,5*a*t²
a=(2*s)/t²
s(t3=3 s) = 0,5*((2*s)/t²)*(t3)²
s(t4=4 s) = 0,5*((2*s)/t²)*(t4)²
s(t4) - s(t3) = 0,5*((2*s)/t²) *((t4)² - (t3)²)
s(t4) - s(t3) = (s/t²) *((t4)² - (t3)²)
s(t4) - s(t3) = (s/t²) *((t4)² - (t3)²)
s(t4) - s(t3) = (8/1²) *(4² - 3²)
s(t4) - s(t3) = 56 m
W czwartej sekundzie pokona 56 m
