Answer:
(we use hess's law) it is so simple but the second reaction is not correct please right it
a. displacement = 6 km
b. velocity = 4 km/h
<h3>Further explanation</h3>
Given
a morning paper route
Required
displacement
velocity
Solution
Displacement is a vector quantity that shows changes in the position of objects in a certain interval of time. Displacement has magnitude and direction
Can be simplified displacement = distanced traveled from starting point to ending point
a. Since we only consider the starting point and the end point, we just need to add up the distances to the north
3 km + 3 km = 6 km
b. Velocity = displacement changes with time
Answer:
The kinetic energy of the molecule is greater than the attractive force between them. The kinetic molecular theory may be used to explain the behavior of solids and liquids.
Hope this helps, please let me know If I'm wrong.