Odpowiedzi

2009-12-10T21:47:12+01:00
T- 20 s
S- 200 m
V-?
V=s:t= 200:20=10m/s
2 4 2
2009-12-10T22:00:02+01:00
T = 20s
s= 200m
s= 1/2 at2
200=a*400/2
200=200a
a=1m/s2
V = a*t
20*1=20m/s
v=20m/s