Answer:
A
Step-by-step explanation:
Answer:
So the body won't fall out.
Step-by-step explanation:
Answer:
Sean can dive 275 feet after he takes 13 lessons.
Step-by-step explanation:
Since L means the number of lessons taken, we will have:
D = 20*13 + 15
D = 260 +15
D = 275
Answer:
Once
Step-by-step explanation:
Whenever v(t) crosses the x axis. Not just bounce off it.