Why does an object in motion stay in motion unless acted on by an unbalanced force?


A. because forces are what stop and start motionbecause forces are what stop and start motion


B. because motion is the inherent state of all matterbecause motion is the inherent state of all matter


C. because motion, once begun, continues to acceleratebecause motion, once begun, continues to accelerate


D. because balanced forces cannot exist in nature