Read the Assertion (A) and Reason (R). Identify the correct relationship between them:
1. Assertion (A):
As a roller coaster moves down a smooth track, its kinetic energy increases.
Reason (R): The roller coaster changes its colour while moving downhill.
Reason (R): The roller coaster changes its colour while moving downhill.
2. Assertion (A):
At the highest point of a swing, the child's gravitational potential energy is maximum.
Reason (R): At the highest point, the child's height above the ground is maximum.
Reason (R): At the highest point, the child's height above the ground is maximum.