HURRY SHOW THE WORK Suzette is 30 meters away from an intersection that is 15 m across going 25 m/s. She sees the light turn yellow. Her car can accelerate at a rate of 4 m/s2. What is the shortest time Suzette can make it across the intersection?

The shortest time is 1.2 sec

Explanation:

Given that,

Distance = 30 m

Speed = 25 m/s

Acceleration = 4 m/s²

We need to calculate the shortest time

Using formula of time

Where, d = distance

v = velocity

Put the value into the formula

Hence, The shortest time is 1.2 sec.

a.   mass number from atomic number

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.