A SUBWAY TRAIN IS MOVING WITH A CONSTANT VELOCITY ALONG A LEVEL SECTION OF THE TRACK. THE NET FORCE ON THE FIRST SUBWAY CAR IS ________ THE NET FORCE ON THE LAST SUBWAY CAR.

equal

equal to

To determine the net force on the first and last subway cars, we need to consider the concept of net force and how it relates to objects moving with a constant velocity.

When an object is moving with a constant velocity, it means that the object's speed and direction of motion remain unchanged. According to Newton's first law of motion, an object will continue to move at a constant velocity (which includes remaining at rest) unless acted upon by an external force.

In this case, since the subway train is moving with a constant velocity along a level section of the track, we can conclude that the net force acting on the entire train is zero. This is because the forces acting on the train are balanced, resulting in no acceleration or change in velocity.

Therefore, the net force on both the first and last subway cars is equal and opposite, meaning they both experience an equal and opposite force. The net force on the first subway car is the same as the net force on the last subway car, and it is zero.