[填空题]
A car traveling 85 km/h stri;t5xw jucx; e2wb4;s1gyc e 32wv xk-) k(sl.pkuvw 3bkes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.80 m. What was the average accpe sb bv3g)1wu; s w2v4l.kxyck-wk(3eleration of the driver during the collisi on? Express the answer in terms of “g’s,” where 1.00 g = 9.8 $m/s^2$ . = $m/s^2$ (retain two decimal places ) g’s