Recent content by Sciencerob

Well, I do hope I can get a response quick before my school's library closes. If not Thanks for your help.

Almost there... I got it to work but when I put in 300 for Velocity I got a number around 40,000. =(300*SIN(0.5236)+SQRT(300^2*SIN( 0.5236)*SIN(0.5236)+2*(44.1)*(9.8))/9.8)*300*COS( 0.5236) That is my formula.

Alright, I've moved to a computer with excel. If anyone would mind helping me out here (sorry for the trouble). =(500*Sin(30)+Sqrt(500^2*Sin(30)*Sin(30)+2(44.1)(9.8)/9.8))*500cos(30) is what I put in and it spits back out at me that I am doing something wrong..

When input 300 I get 6.86804. Anything above 70 starts to level off. I've done the following: 10 -> 3.332 20 -> 4.9 30 -> 5.71 40 ->6.12 70 ->6.599

I did use your sin*sin format and I removed the negatives from the gravity. Still getting the same results. I've doubled and triple checked, I did put in the right variables all the way through. I keep getting 6.88337

I just put in 500 and then 1000 as different variables and they yielded the same answer... Checking the format the only thing that looks like it might be out of place is that I have it Sin(30)^2 rather than Sin^2(30). It wouldn't take it any other way. I did put gravity as a negative force...

Alright. Thank you. I do seem to be having some trouble using my Ti-89 though. For some reason when I input it I can't get the sin Squared to format. It tells me that I'm missing a parentheses when I do that. Any possible help with this? :| Nevermind Found out what to do. Just to make sure, I...

The X represents velocity which could is probably moving both in the Y direction and the X direction. I suppose what I should be doing for the last part is V(subx) equals Vsubzero Cos(Theta) to give me X velocity. (I know its not an equation I meant function). So is F(x)=...

Well, I thought the first part I had gotten all the variables correct. (x*Sin(30)+Sqrt(x^2Sin^2(30)+2(44.1)(9.8))/9.8) represents the equation you have me. Then multiplying by the X should give the range... unless I have to separate the horizontal component of initial velocity prior to...

I mean that if I were to set it up to graph on a calculator or excel that V is the variable I would be inserting the value for. For the graphing program I have on my computer I have done this so far but I think I have made an error, still in the process of trying to fix it...

Okay, so then V would in fact be f(v) and that's the number I will be plugging.

So am I correct is saying V sub-zero is in fact zero? I was initially thinking that V sub zero would be the muzzle velocity.

Yup, that's it Kuru. I need MV as a function of range. The range is variable so I'm not looking for any exact number really. I just need the function so I can show the relationship on a graph. I just don't get where I went wrong. I'm not sure if the equation my group gave me is inadequate or if...

There is a theoretical ship out there. I need to determine the velocity needed to hit the ship. The distance is from the fortress(and thus cannon) to the ship. Also it would be the range as I understand it. And I relooked at the formulas. Given this type of problem, Wouldn't...

I am trying desperatly to put everything in terms of one variable. :( I do know the height of the cannon on the fortress is 44.1m. Angle theta is 30 degrees. That is all the information I have. I am trying to make a function that can give me muzzle velocity given a distance. Edit: THinking...