To calculate the relative velocity of A with respect to B, you need to subtract the velocity of B from the velocity of A. In this case, A is at rest (0 m/s) and B is moving at 60 m/s. Therefore, the relative velocity of A with respect to B is:
Relative velocity = Velocity of A - Velocity of B Relative velocity = 0 m/s - 60 m/s Relative velocity = -60 m/s
The negative sign indicates that A is moving in the opposite direction to B. So, the relative velocity of A with respect to B is -60 m/s.
If you obtained both 0 and 180 as potential answers after performing the calculation, it might be because you considered the magnitudes of velocities without considering their directions. However, velocities are vector quantities, and their direction plays a crucial role in determining the relative velocity.
In this scenario, since A is at rest and B is moving in the positive direction, the relative velocity of A with respect to B will be in the negative direction (opposite to B's motion). Thus, the correct relative velocity is -60 m/s, indicating that A is moving at 60 m/s in the opposite direction to B.