Person A is at rest, person B is walking towards a moving car, and person C is sitting in the car. The car appears to be in motion as seen by:
Consider the following situation. Both A and B are at rest and the car is moving at 20 km/hr.
The car appears to be in motion when seen by:
Two people are sitting inside a moving car. Since the car is moving, one person is in motion with respect to the other.