Answer:
Mass and distance
Step-by-step explanation:
Distance:
if you dropped a tennis ball from 4 feet onto your foot you will feel more force than if you dropped it from 1 foot
Mass:
A bowling ball will definitely hurt more than a balloon and even if you made the balloon bigger than the bowling ball. The bowling ball would fall faster because it has more mass so it would have the most gravitational force
(hope this helped)