A laser signal is sent from the earth to the moon, and the signal reflected from the moon is received after about 2.56 seconds. The known speed of light is 300000 km / s What's the distance between the moon and the earth There should be a formula

A laser signal is sent from the earth to the moon, and the signal reflected from the moon is received after about 2.56 seconds. The known speed of light is 300000 km / s What's the distance between the moon and the earth There should be a formula

The distance between the moon and the earth is 2.56 × 30 △ 2 = 384000 km