Answer:
Newton's First law of motion. 
Step-by-step explanation:
Newton's First law of motion - 
Newton' s first law of motion , also called the law of inertia . 
According to this law , when an object is at rest or at stationary position , stays at that position and when the object is at motion , continues to be at the motion unless and until some force is acted on it . 
Hence , the correct law for the given statement of the question , is Newton's First law of motion .