posted by Tom .
A car of mass 1979 kg drives over a semicircular hilltop of radius 12.6 m and through a semicircular valley of radius 17.2 m with a constant velocity of 7.28 m/s.
What is the normal force on the car at the bottom of the valley?
would i use the equation mv^2/r +mg ?
at the bottom? Force= mg+mv^2/r
yes, use that equation