B 10
8
F
SPEED (m/s)
2
IC
0 2
6.
8
20 22
$
TIME (seconds)
a) What is the maximum speed of the bus?
b) How long the bus was stationary?
c) Calculate the total distance travelled by the bus?
d) What is the average velocity of the bus?

Please ask your question again

And try to ask clearly

You will get your answer

he made 11 calls in one day

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.