1. Oct 11, 2007

### lplover1990

how do you determine the maximum range w/o using the equation dx= v^2 sin2 feta/g

because i need to design an experiment to figure out the maximum horizontal range of a frictionless, spherical ball

2. Oct 11, 2007

### learningphysics

Why not use that equation?

3. Oct 11, 2007

### lplover1990

because we're not allowed to..

4. Oct 11, 2007

### learningphysics

can you describe a little more about the experiment you need to design?

are you supposed to launch the projectile at different angles and find the angle at which the range is maximum?

is the launching speed constant?

5. Oct 11, 2007

### lplover1990

a we were told was that were not allowed to use the special formula(he one i told you about before, and that we're to find the max range of it with an independant and dependat variabl(range)...that's all and it should be be taking place on a football field...i was thiking to do what you just said but how could i if i can't use that formula

6. Oct 11, 2007

### learningphysics

tan(theta) = 4H/R

R = 4H/tan(theta)