Respuesta :
Answer:
inertial frame
Explanation:
i looked this up and it says Newton's First Law: It states that a body continues in its state of rest or uniform motion in a straight line until and unless an unbalanced force acts on it. It is valid only in an inertial frame of reference.
Answer:
Non-inertial
Explanation:
Newton's First law of motion talks about the condition of rest or uniform motion and is applicable on just Inertial Frame. Thus newton's laws are not valid in a non-inertial frame.