Final answer:
To accelerate a more massive object compared to a less massive one, a greater force is required due to the inverse proportionality of mass to acceleration, as defined by Newton's second law of motion.
Step-by-step explanation:
When trying to accelerate a more massive object compared to a less massive object, you must apply a greater force. According to Newton's second law of motion, acceleration is inversely proportional to the mass of an object when the same force is applied; therefore, the more massive the object, the less acceleration is produced by a given force. This relationship is captured by the equation Fnet = ma, which indicates that the net force applied to an object results in acceleration that is directly proportional to that force and inversely proportional to the object's mass.