Newton's first law

• what is Newton's first law for a stationary object?

  if the resultant force on a stationary object is zero, the object will remain at rest
• what is Newton's first law for a moving object?

  if the resultant force on a moving object is zero, the object wil continue to move at a constant velocity
• what is inertia?

  tendency of objects to continue in their state of rest or of uniform motion