[填空题]
Two students are asked to find tr ajad 2 8i n*j8jl(j3w f.q9vh4yfvc4he height of cu+*om l0pq9itpa 6+q0ab q ,ya particular building using a barometer. Instead of using the barometer as an altitude-measuring device, they take it to the roof of the building and drop it off, timing its fall. One student reports a fall time ol qcuti+p m90a+ py*, 06obaqqf 2.0 s, and the other, 2.3 s. How much difference does the 0.3 s make for the estimates of the building’s height? m
