Recent content by sotrashy

Ahhh, I see. I'm calculating AT time 4.3s! dy = 0 = vt + 1/2at^2 Better?

I used the calculator at http://hyperphysics.phy-astr.gsu.edu/hbase/traj.html#tracon while inputting Vxi = 9.56, t = 4.3s, and dx = 41.1 and I get the vertical initial velocity to be 42.1 m/s which is what I got in the beginning. I still don't know where I'm going wrong :S

It seemed like that to me, yet when I input these values into http://www.wolframalpha.com/input/?i=projectile+motion, I get travel time that is twice the question's (8.6s) and a horizontal displacement that is also twice the distance (82.2m). I can't figure out why there's a difference.

Homework Statement A boy kicks a ball into the air. It takes 4.3 seconds to land 41.1 meters from his position to the right. What is the launch velocity and launch angle of the ball? Ignore air resistance. Δx = 41.1 m t = 4.3 s a = -9.8 m/s2Homework Equations dx = vxt vfy = v0y + at The...