[填空题]
During a Chicago storm, winds can whip horizontally at speeds of .hr l*8,i7oz*;dwzv )tbnya p100ks gp+ ( e yye2n3l-m8wwf+5hs6z fdx6im/h If the air strikes a person at the rate of 40kg/s per square meter and is brought to rest, estimate the force of the wind on a person. Assume the person is 1.50 m high and 0.50 mheyin2xl6m(68wz sy psg 53f+e dw-f+ wide. Compare to the typical maximum force of friction between the person and the ground, if the person has a mass of 70 kg. N