# How to solve this 1ode

1. Sep 26, 2009

### Keval

$dt=\frac{1}{g-kv^2}dv$
Need help to solve this, trying to find the time that a sphere takes to hit the ground.

so far i multiplied by -1 then tried subbing in $kv^2=sin\theta$ but im getting nowhere with that method, can someone help me with a step by step method or give me the correct substitution

2. Sep 26, 2009

### tiny-tim

Last edited by a moderator: Apr 24, 2017