Odpowiedzi

2010-01-10T22:52:31+01:00
V=2Πr/t
v=2×3.14×30m/20s
v=6.28×30/20s
v=188,4/20
v=9,42m/s
v=33,912km/h

Predkosc chwytaka to 33,912km/h