[填空题]
Police investigators, ex,d7ex1r ;ya*feme9qj k1yd *+s4hip o 7ebxk 2ami4( ,k.qcy kjr l9;dbnxning the scene of an accident involving two cars, measure 72-m-long skid marks of one of the cars, which nearly came to a stop before colliding. The coefficient of kinetic frictiodlc9 krxk(;j,.y4 bqnn between rubber and the pavement is about 0.80. Estimate the initial speed of that car assuming a level road.
