SERE At which temperature does the motion of atoms and molecules stop?
0°C
ОС
0°K
ОК

0 Kelvin, or 0°K.

Explanation:

The Kelvin scale is used primarily in scientific applications due to the unit's lack of negative values.

0 Kelvin is equivalent to "absolute zero", or the temperature at which molecules and atoms no longer physically move.

0 Celsius on the other hand is a system based on the freezing and boiling points of water. 0 Celsius is the freezing point and 100 Celsius is the boiling point.

unbalanced force

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