Odpowiedzi

2009-11-02T13:38:13+01:00
A = 4 m/s
V = ∫adt
V = 4t
t = 10 s
V = 40 m/s

Vśr = Σ4t/8

Vśr = 144/8 = 18 m/s

S = at²/2
S = 4*10²/2 = 200m

d)
vt = 20 m/s
S = vt
S = 20m