Ashley walks from building I to building II at a constant speed
of 1.3 m/s. It takes her 2 minutes to get to building II from
building 1. What is the distance between the two buildings?

The distance is 156 Meters

Explanation:

It takes 2 minutes or 120 seconds to get from one building to the other, and she is walking at a speed of 1.3 meters per second, therefore if you multiply 1.3*120 you get 156 meters

A. Positive force --> Balanced Force --> Negative Force

Explanation:

When the piano is moving upward it experiences a positive force. This force is acting upwards.

When the piano is stopped and not moving, the net forces on it are 0. This means that the upwards and downwards forces are balanced. Thus it is experiencing a balanced force.

When the piano is falling to the ground, it is experiencing a negative force. This force is aimed downward.