Riding a Loop-the-loop. A car in an amusement park ride rolls without friction around the track shown in the figure. It starts from rest at point A at a height h above the bottom of the loop. Treat the car as a particle. pic If the car starts at height h= 95.0 m and the radius is r= 19.0 m, compute the speed of the passengers when the car is at point c, which is at the end of a horizontal diameter. Take the free fall acceleration to be g= 9.80 m/s^2. This is a poorly worded problem in my opinion. For one thing, I don't know where C is by their description.