Calculating Light Travel Time for 60 cm

[sofianets]

Homework Statement

if the velocity of light in the medium is assumed to be 2.10^-8 m/s, how much time does it take the light to travel through the distance of 60 cm?

Homework Equations

n/a

The Attempt at a Solution

i tried to do something but not enough.. :(

 

[Doc Al]

What's the definition of speed? (Rewrite the speed of the light more carefully. I doubt you meant 10^-8.)

 

[sofianets]

yes,it can be 2.10^8 m/s

 

[TameTroll]

if the velocity of light in the medium is assumed to be 2.10^8 m/s, right?

so, if it had asked:

how much time does it take the light to travel through the distance of 2.10^8 m?

You would have answered 1 second.

From here, you can derive the formula.

distance/speed = time taken

Just be sure to convert the units as needed :)