laksdnflkasnd7008 laksdnflkasnd7008 Today at 2:54 AM Physics Answered If +0.8% grade meets -0.7% grade and the rate of change of grade for 30 m distance is 0.05, thelength of the vertical curve will be(A) 600 m(B) 700 m(C) 800 m(D) 900 m