Question

A laser beam from Earth is reflected by a mirror placed on the Moon. If the speed of the beam is 3.00 x 108 m / s and the distance from Earth to the Moon is 3.81 x 108 m, how long in seconds will the laser beam take to return to its starting point?

Answer 1

1.27seconds

Step-by-step explanation:

Speed = 324 m/s , Distance = 411.48m

Time = Distance/Speed

Time = 411.48/324 seconds

Time = 1.27seconds ( Ans)