Final answer:
To make hockey pucks with different masses travel with the same motion, Charlie should consider the force applied, the coefficient of friction, and the air resistance on the pucks.
Step-by-step explanation:
If Charlie wants to make hockey pucks with different masses travel with the same motion, he should consider the force applied to each puck, the coefficient of friction between the pucks and the surface, and the air resistance on the pucks.
The force applied to each puck affects their motion. If Charlie applies a greater force to a larger mass puck, it may have the same motion as a smaller mass puck with a lesser force.
The coefficient of friction between the pucks and the surface affects how much resistance they experience. If Charlie adjusts the coefficient of friction, the pucks may travel with the same motion despite having different masses.
The air resistance on the pucks can also affect their motion. Charlie may need to consider the impact of air resistance and adjust it accordingly to make the pucks travel with the same motion.