It appears you've uploaded a worksheet or assignment involving calculus and physics concepts related to velocity, acceleration, and harmonic motion. I can help clarify or solve the problems presented. Here’s what I’ll do:

1. Transcribe the relevant parts of the text.
2. Solve or explain each question step-by-step.

Let me know which question you’d like to address first, or if you’d like me to go over all of them systematically. If you'd like me to analyze a particular