1 a=v^2/r v=s/t s=2pir t=60sec 2 a1=v^2/r a2=(v/2)^2/(r/2)=1/2 v^2/r3 as=sm punkt 1 am=vm^2/r vm=s/tm tm=3600secas/am=v^2/vm^2=tm^2/t^2=3600