Answer:
Momentum is directly proportional to an object's mass
Explanation:
See the attached picture.
The formula for momentum is P (momentum) = Mass x Velocity
So if mass increases, momentum increases.
Definitions just in case:
There is a direct proportion between two values when one is a multiple of the other (example: hourly pay, the more you work, the more money you make). Inverse proportion occurs when one value increases and the other decreases (example: the more you work, the less work left to do)