As we know that refractive index is given as

now we know that
speed of light in medium =
m/s
now refractive index is given as


now we know that refractive index of glycerine is 1.473
So here this material will be <u>GLYCERINE</u>
I KNOW that you must have seen this formula before. It gives
the distance covered in a certain time of accelerated motion:
D = 1/2 A T²
Distance covered= (1/2) (Acceleration) (Time squared) .
The question gives us the acceleration and the time.
I've got a weird idea: Let's plug them into the formula. OK ?
Distance = (1/2) (10 m/s²) (10 sec)²
= (5 m/s²) (100 sec²)
= 500 meters .
Deep lake !
That would be Cyanide.
Hope this helps! (:
You've described two (2) axes of motion.
The third one would have been up-and-down.