What population of stars does our star belong to?

Our star ,that is, Sun belong to Population I.

Explanation:

In  1940s, stars were divided into two categories by Wlter Baade:

a. Population I (Metal-rich)

b. Population II (Metal-poor)

Population I stars tend to be luminous, concentrated in the disks of spiral galaxies. They are still hot and young containing rich amount of heavy metals.

Sun falls in this category.

Population II stars tend to be less luminous found in the nucleus of the galaxy.

They are less hot. They are poor in heavy metals because they are old.

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explanation:

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