Calculating the path of a rocket is not easy. As it uses up its fuel, the rocket's mass changes. As its velocity changes, the drag force from the air it moves through changes. This drag force is called air resistance. Air resistance depends on an object's mass, velocity, shape, and cross-sectional area. Ravenna found a computer program that would calculate the path of a rocket when given the following information: the rocket's mass its cross-sectional area the initial mass of the rocket's fuel two constants The constants are different for every rocket. They can be calculated using data from a single flight of the rocket. Ravenna bought a model rocket engine and used it to build a model rocket. She wants to use the computer program to help her maximize her rocket's flight range. What does Ravenna need to do in order to get the information the program needs? measure her rocket's mass and cross-sectional area find the appropriate values for the constants test her prototype and collect data about its flight optimize the ratio of rocket fuel mass to rocket mass