**1. The problem statement, all variables and given/known data**

If you can hurl a ball so that its initial speed is 30m/s, what is the widest river you can throw it across?

**2. Relevant equations**

The range equations,

t=2(vi)(sintheta)/g

d=visin2theta/g

**3. The attempt at a solution**

I know you have to use components so what I got what Vx=30sintheta and Vy=30costheta

I don’t know what to do next or how to sub it in because there isn’t a angle given . Can someone please help me. Thanks

http://ift.tt/P39x87