[填空题]
A person who is properl /1lfusud:8qmy *w*gmy co6pwg0 2, t qt8t1gfzb /5kg.mi.qez rxnstrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed 6q2f.qgpxw/tk.g 8 1t0geb5 t,im zr zabout 30 “g’s” $(1.0 g\,=\,9.8\,m/s^2)$. Assuming uniform deceleration of this value, calculate the distance over which the front end of the car must be designed to collapse if a crash brings the car to rest from 100 km/h . $\approx$ m(retain one decimal places)
