6. fill in the blanks with the words given to construct an explanation summarizing what occurred in the lab…

Explanation:

Step1: Recall force - mass relationship

Force $F = mg$ (where $m$ is mass and $g$ is acceleration due to gravity). When mass $m$ of the helicopter increases, according to this formula, the force of gravity $F$ on the helicopter increases.

Step2: Consider acceleration due to gravity property

The acceleration due to gravity $g$ near the surface of the Earth is a constant (approximately $9.8\ m/s^{2}$) and does not depend on the mass of the object. So when mass is added to the helicopter, the acceleration due to gravity remains the same.

Step3: Analyze velocity change

If the force of gravity on the helicopter increases (because mass increased) and assuming no other significant upward - acting forces change, the net force acting on the helicopter in the downward direction increases. According to Newton's second law $F = ma$ (where $F$ is net force, $m$ is mass and $a$ is acceleration), if the net force increases and mass also increases, without more information about the forces and the system, we assume a simple case where the helicopter is in free - fall or a situation where the main force is gravity. In this case, as the mass of the helicopter increases, the velocity of the helicopter will increase over time due to the increased downward force.

Answer:

As the mass of the helicopter increased, the velocity of the helicopter increased, the force of gravity on the helicopter increased. When mass is added to the helicopter, the acceleration due to gravity remained the same.