A car's bumper is designed to withstand a 5.76 km/h (1.6 m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force (in N) on a bumper that collapses 0.225 m while bringing a 820 kg car to rest from an initial speed of 1.6 m/s. (Enter a number.) Cl" 1. [/5.71 Points] OSCOLPHYSZO16ACC 7.3.P.O17. ASKYOUR TEACHER PRACTICE ANOTHER (a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 8 x 109 kg and its center of mass is 41.0 m above the surrounding ground? (Enter a number.) :11 (b) What is the ratio of this energy to the daily food intake of a person (1.2 x 107 J)? (Enter your answer as a ratio to the number 1. Enter a number.)