Both answers are going to be C
To solve this problem it is necessary to apply the trigonometric ratios of the given velocity components.
If we make a graph of the velocity vectors in their respective velocities according to the given description we will have something similar to the attached graph.
The angle could be obtained from the components of the opposite leg and the adjacent leg so that


The opposite leg value (y) is 40cm / s and the adjacent leg (x) is 30cm / s


Therefore the final direction that does the first ball is 36.87°
Answer:
Night vision goggles capture infrared light given off by heat
Answer: An electric charge
Explanation:
Because it is carried by charged particles