In which two ways does a balanced chemical equation model the law of conservation mass?

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

Which best represents the law of conservation of mass ?