Answer:
r= 15
Step-by-step explanation:
Answer:

Step-by-step explanation:

Answer:
50m/s
Step-by-step explanation:
We assum the direction the baseball is travelling to the bat is the positive direction at 20 m/s and is hit in the opposite at a faster speed. The change in velocity is the final velocity minus the initial velocity:

The change in velocity is 50m/s
Answer:
D
Step-by-step explanation: i believe it is D