Odpowiedzi

2010-03-22T19:21:12+01:00
Dane:
t = 20s
S= 40m
t₁ = 10 s
t₂ = 40s

S = at²/2
2S = at²
a = 2s/t² = 2 × 40 m / (20s)² = 0,2 [m/s²]

a)
S = at₁²/2 = 0,2 [m/s²] × (10s)² / 2 = 10 m
b)
S = at₂²/2 = 0,2 [m/s²] × (40s)² / 2 = 160 m
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