Part of a rollercoaster ride involves coasting down an incline and entering a loop 9.40 m in diameter. For safety considerations, the roller coaster's speed at the top of the loop must be such that the force of the seat on a rider is equal in magnitude to the rider's weight. From what height above the bottom of the loop must the roller coaster descend to satisfy this requirement? 11.75 x Your response differs from the correct answer by more than 10%. Double check your calculations. m