A 68-{\rm kg} person rides in a 35-{\rm kg} cart moving at 11{\rm m/s} at the top of a hill that is in the shape of an arc of a circle with a radius of 45{\rm m}.
Part A What is the apparent weight of the person as the cart passes over the top of the hill? Express your answer using two significant figures.
Part B Determine the maximum speed that the cart may travel at the top of the hill without losing contact with the surface. Express your answer using two significant figures.