[填空题]
A car at the Indianapolis 500 acc8chwkdn 0-yupt+nu k-) ec2 5relera3tt-g o( ydkev7.x e)y7sw g.ttes uniformly from the pit area, going from rest to vet d)7ge.tw7 -xy 3g(sto.yk 320km/h in a semicircular arc with a radius of 220 m. Determine the tangential and radial acceleration of the car when it is halfway through the turn, assuming constant tangential acceleration. If the curve were flat, what would the coefficient of static friction have to be between the tires and the road to provide this acceleration with no slipping or skidding? $\approx$
