Odpowiedzi

2009-12-22T19:06:59+01:00
V = 400 m/s
s = 0,4 m
a = ?
a = (v^2) / (2 * s)
a = 400^2 / (2 * 0,4)
a = 200 000 m/s^2
v = a * t
t = v / a
t = 400 / 200 000
t = 0,002 s