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R= 1,2m
Fd=m*V²/R
V²=Fd*R/m
V²=85*1,2/2,5
V²= 102/2,5
V²= 40
V=4√10
odp. Ta predkosc to 4√10 m/s
a=V²/R
a= (4√10)²/ 1,2
a= 160/1,2 = 133, (3)
odp. przyspieszenie tego ciala to 133,(3) m/s²