[填空题]
A person who is properly cs v4 kwo x7m.v8g1)ckoong ,,loodq8 f-x llx54qstrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed a-ldo,q ,84qx5xlf lgobout 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)
