To find the acceleration of an airplane that accelerates uniformly from rest over 800 feet to a speed of 100 ft/sec, the relevant equations of motion must be applied. The relationship between acceleration, velocity, and time can be expressed in differential form, utilizing the Chain Rule to incorporate displacement. The solution involves integrating these relationships to derive the acceleration. The key is to recognize that velocity is the derivative of position with respect to time, while acceleration is the derivative of velocity. Proper application of calculus principles will lead to the correct determination of acceleration.