Final answer:
The hypothesis that the angle of launch affects the distance a paper ball travels is correct, scientifically speaking. Color does not influence the trajectory or distance in this context.
Step-by-step explanation:
The hypothesis for shooting paper balls into a beaker that the angle of launch affects the distance the paper ball travels is most likely correct. In physics, the trajectory and distance covered by a projectile, such as a paper ball, are influenced by its initial speed and the angle of launch. However, the color of the paper ball has no known effect on its trajectory or the distance it travels since the color does not affect the physical principles, like gravity and air resistance, that govern projectile motion.
To test the hypothesis that the angle of launch affects the distance the paper ball travels, you could conduct an experiment by launching paper balls at different angles and measuring the distance they cover. You would need to keep other variables constant, such as the initial speed of the paper ball and the environmental conditions.