No one answered my burning questions about imaginary tides...these tides that have me in a bind, so to speak. So, *sniff, sniff* I will just blunder through the essay questions as best I can. Thanking everyone who has helped me all these weeks...I have a test Monday and feel confident because of all the wonderful help from the forums and because the professor suddenly relented and is going to write formulae on the board for us to use. If anyone has a last-minute answer for this, I'd appreciate it: Q. A projectile is fired straight upward at 141m/s. How fast is it moving at the very top of its trajectory? Suppose that instead it were fired upward at 45 degrees? What would be its speed at the top of the trajectory then? A. I have it going 0 m/s at the very top of any trajectory. We ignore air resistance in our class. Thx again y vaya con Dios, amigos y amigas. Bueno!