The variable we have to determine for this problem is the time. Since the given information is speed, we have to know the distance so that we can solve for the time. From literature, the distance between the Earth and the moon is 384,400,000 meters. Therefore,
Speed = Distance/Time Time = Distance/Speed Time = 384,400,000 m/ 3×10⁸ m/s = 1.28 seconds
