Odpowiedzi

2009-11-11T13:39:31+01:00
V = s/t
r = 50m
t = 4min

s = 12 * 2πr ≈ 12 * 2 * 3,14 * 50m = 3768m

v = 3768m/4min = 3768m/240s = 15,7 m/s

Odp: Prędkość średnia tego zawodnika to 15,7 m/s.
1 5 1
2009-11-11T16:38:43+01:00
V = s/t
t = 4min
r=50m

s = 12 * 2πr ≈ 12 * 2 * 3,14 * 50m = 3768m
v = 3768m/4min = 3768m/240s = 15,7 m/s
;)