Need help finding the launch angle of a ball

[abelmoore]

Homework Statement

Over a completely flat surface a ball weighing 0.8kg is thrown with a speed of 50m/s
what angle must it be thrown at to 100m away

Relevant Equations

havent figured it out yet

the mass is 0.8kg
speed is 50m/s
distance is 100m

 

[berkeman]

Homework Statement:: Over a completely flat surface a ball weighing 0.8kg is thrown with a speed of 50m/s
what angle must it be thrown at to 100m away
Relevant Equations:: haven't figured it out yet

the mass is 0.8kg
speed is 50m/s
distance is 100m

Your problem statement seems incomplete. Did you mean to say

>what angle must it be thrown at to land 100m away

And you need to show the Relevant Equations and your best try at working the problem before we can offer tutorial help. Please fix/update the problem statement and show your work. Thank you.