Odpowiedzi

2009-11-28T11:59:51+01:00
L=16m V₀=?
a=0,2m/s² t=?
V=0


l=(V+V₀)t/2
V=0 => l=V₀t/2

V=V₀-at
V₀=at
t=V₀/a

l=(V₀*V₀/a)/2
l=V₀²/2a
V₀=√2la => √2*√16m*√0,2m/s² = 2,5m/s

t=V₀/a
t=√2la/a
t=√2l/a => t=√2*√16m/0,2m/s²=160s