       newbie here,, need help with parametrics

• To: mathgroup at smc.vnet.net
• Subject: [mg96455] newbie here,, need help with parametrics
• From: "R.J." <nemocamaro at epix.net>
• Date: Sat, 14 Feb 2009 03:07:05 -0500 (EST)

```I am using Mathematica and i'd rather be using derive,,,,, but anyways,,  heres the problem i have to do, a baseball is thrown from the stands 32 feet from the ground at an angle of 30 degrees above the horizontal, initial velocity is 32 feet per second.

what i want to do is find how to plot this in mathematica,, the graph i keep getting says it hits the ground after .8 seconds,   and i know thats not right,,, here is the formula i am using

r = (x + v Cos a) t) i + (y + (v Sin a) t - 1/2 gt^2) j

where x is the initial x position and y is the initial height, v is the initial velocity a is the angle (30*) t is time and g is the gravitational constant..

i'm stuck,,, any help?

```

• Prev by Date: Re: NDSolve - Nice function but stiffness-problem
• Next by Date: Re: What's up with missing contour labels in Mathematica 7.0.0 (OS
• Previous by thread: Re: Conditional evaluations of functions
• Next by thread: Re: newbie here,, need help with parametrics