Answer
The passengers have more momentum than the balloon because they have more mass than the balloon. As a result, the passengers will continue to travel in their original direction longer. The car is slowing, so the relative position of the passengers is to move forward, whilst the balloon will move backward. Upon acceleration, the opposite will be true.
Work Step by Step
The passengers have more momentum than the balloon because they have more mass than the balloon. As a result, the passengers will continue to travel in their original direction longer. The car is slowing, so the relative position of the passengers is to move forward, whilst the balloon will move backward. Upon acceleration, the opposite will be true.