How do polarizing sunglasses reduce the glare from the road? explain.

Answer

Polarization is a method of restricting different plane of transverse waves into the required plane.  

Polarization process is done with the help of Polaroids. Polaroids are kept at different angles, these angles are selected according to the wave requirement. Polaroids allows only waves which are aligned to it.

so, this phenomenon is the same in case of polarizing sunglasses as it restricts the unwanted sun waves to pass through it.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s