Parametric Solving Question From 14 Year Old

*To*: mathgroup at smc.vnet.net*Subject*: [mg23507] Parametric Solving Question From 14 Year Old*From*: Alan <alana at mac.com>*Date*: Tue, 16 May 2000 02:44:55 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Hello! I am 14 and am wondering how to solve parametric equations directly without graphing in Mathematica? I am figuring out when a projectile in motion hits the ground only due to the even force of gravity acting upon it. The parametric equation is: x(t)=15*t*Cos[60] y(t)=15*t*Sin[60]-9.80665/2*t^2 I want to find the value x(t) and t when y(t)=0. Thank you, Alan

**Follow-Ups**:**Re: Parametric Solving Question From 14 Year Old***From:*Wagner Truppel <wtruppel@uci.edu>