[填空题]
Drag-race tires in contl0v oiehd6trq7zrux ( 97h89z bj;t3zzqe7m8k 3enld m802oi act with an asphalt surface have a very high coefficient of static 0e;kj z78qn3zi3l8 dt2bomem friction.
Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 1.0 km in 12 s , starting from rest.
