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2.24 Va rog!!! Repede!!!Dau coroana!!!

224 Va Rog RepedeDau Coroana class=

Răspuns :

a)
L=2πR
d=Dπ*1800
D=80cm=0,8m
d=0,8*3,14*1800=2,512*1800=4251,6m
d=v*t
v=d/t
t=8min=480s
v=4521,6/480=9,42m/s

b)
d=v*t
t=d/v
t=942/9,42=94200/942=100s