Solving Trajectory Problem with 2 Variables (V,A)

[kuruman]

It looks like you are making a big mistake in your inputs, either the variables or the formula itself, probably the formula. I used Excel and here are a couple of benchmarks

v₀ = 150 m/s, R = 2057 m
v₀ = 300 m/s, R = 8023 m

I cannot help you any more. It is between you and your TI-89.

 

[Sciencerob]

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..

 

[kuruman]

First off you need to put asterisks to denote multiplication. This 2(44.1)(9 .8) won't work.
Secondly, you need to put the angle in radians, not degrees.

 

[Sciencerob]

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.

 

[Sciencerob]

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

 

[kuruman]

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.

You put this 9.8 in the wrong place. It should divide everything not just the radical.