Question

What is the maximum speed a car can travel over the top of a hill of radius 22 m before flying off the hill?

Answer 1

g=v^2/r
solve for v. g=9.8m/s^2

Answer 2

gravity provides the centripetal force

m g = m v^2 / r ... v^2 = r g = 22 * 9.8

answer is in m/s