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the narrator says that the story of the universe is the story of the transformation of energy from one form to another. what do you think he means?

He means that the universe transgressed through different forms as it evolved; it could also be an analogy about the different processes the universe went through throughout the 13 trillion years to present day.

The narrator is pointing out that energy is involved in every event, and each event can be described in terms of energy.

Explanation: plato answer

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