Golf ball projectile motion: finding flight time

[rmiller94]

Homework Statement

A golf ball is hit with a velocity of 50 m/s. The angle to the ground is 17 degrees. find t

Homework Equations

The equation my teacher provided was: y=vi(sinθt)-4.9t^2

The Attempt at a Solution

0= 50sin17-4.9t^2
0=-4.9t^2-48.1t

this is where i got stuck... i guess it's more the actual algebra that I'm stuck on. I tried the quadratic formula but i got an odd answer and now I'm blanking on other options. it's only my 3rd week of school so I'm still sort of rusty.

any help would be greatly appreciated!

 

[gneill]

Check that your calculator is set for angles in degrees rather than radians.

 

[rmiller94]

Check that your calculator is set for angles in degrees rather than radians.

Thank you! New calculator...