[填空题]
A car at the Indianapolis 500 aclh0r,o6ni q yj3pthxi,;+z j1 celera.pi11 quwyko5ln69g1b if-to tes uniformly from the pit area, going from rest to 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 consttg9.upow ioi1lq 65fn1 kby -1ant 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? $\approx$
