[填空题]
During a Chicago storm, winds can whiw3b 4vuatw *dlwy7(x ;p horizontally at speeds ofojas,)mjl3c+*x e jp( 100km/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 m wide. Compare to the tye+,jj mlo*xj) sa(3cppical maximum force of friction $\mu\approx1.0$ between the person and the ground, if the person has a mass of 70 kg. N
$F_{on person}$ $F_{fr}$