A laser signal is sent from the earth to the moon, and the signal reflected from the moon is received in about 2.56 seconds. The known speed of light is 300000 kilometers per second. What is the distance between the moon and the earth?

A laser signal is sent from the earth to the moon, and the signal reflected from the moon is received in about 2.56 seconds. The known speed of light is 300000 kilometers per second. What is the distance between the moon and the earth?

A: the distance between the moon and the earth is 384000 km