Fiberglass, an insulator, can be found in the wals and roofs of some houses and buildings. why would an insulator be needed inside of buildings in the winter? it makes the building look pretty b) it keeps the heat inside of the building. c)it keeps the heat outside of the building. d) it keeps the cool air inside of the building. a) a it makes the building look pretty

It keeps the heat inside of the building

the answer is definitely c.

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