30 is the correct answer your looking for
I think it would be Reflection because the light in the ray reflects off of any flat or shiny object.... Hope this helps ^-^....
Answer:
12 m
Explanation:
The object is in uniformly accelerated motion, so the distance covered can be found using the following suvat equation:

where
s is the distance
u is the initial velocity
t is the time
a is the acceleration
For this problem,

and
u = 0, since we are considering the first second of motion
So, substituting t = 1 s, we find
