Light takes 1.30 s to travel from the moon to Earth in an experiment.

Question

Light takes 1.30 s to travel from the moon to Earth in an experiment. What is the distance between them at this time?

____________m

Answer 1

speed * time = distance

3*10^8 m/s * 1.30 s = 3.9*10^8 m*s/s = 3.9*10^8 m

Answer 2

distance=speed*time

=3*10^8*1.3

=3.9*10^8 metres

Answer 3

Distance= Speed*Time

                Speed=Speed of light=3*10^5m/s

                 Time(Given)=1.30sec

              =1.30*3*10^5m/s

               =3.90*10^5m

Answer 4

S= v/t

S= (speed of light)/ time taken

s= 3x10^8 / 1.30

s=390000000m