[填空题]
The CM of an empty 1050 pfoztc3,fqz+b3 -a(e -kg v 25iqngn;dtoal m+( d;j tk*-car is 2.50 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.80 m from the front of the car, and three people sitd(da;gin l nv ;m5tjt 2*-ko+q in the back seat 3.90 m from the front? Assume that each person has a mass of 70.0 kg. m
