Conceptualizing units. A small burrito, like those bought at your local fast-food restaurant, has a mass of approximately 100 g and contains about 300 C. (The capital “C” indicates that this unit is a “food Calorie.”) From what height would you need to drop the burrito to give it a kinetic energy equal to its dietary “energy”? That 1 food Calorie is equal to 1000 calories = 4186 J. Ignore air drag.