according to newtons first law, which characteristic of a moving object would remain constant if there were…

according to newtons first law, which characteristic of a moving object would remain constant if there were no other forces acting on it?\no size\no mass\no shape\no speed
Answer
Brief Explanations:
Newton's first law states that an object in motion will stay in motion with a constant velocity (which includes constant speed in a straight - line path) if no net external force acts on it. Size, mass, and shape are not directly related to the motion characteristics described by Newton's first law in this context.
Answer:
speed