A student is investigating heat transfer. The student places the ends of a curved copper bar into two insulated cups, as
shown below. The copper bar is at 20°C, Cup 1 contains
40°C water and cup 2 contains 20°C water. Each cup
contains the same amount of water.
Part A Describe the direction of heat flow between the cups of water in the first few
minutes of the investigation.
Show your work:

dang that balls went far

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