How do you do this problem? It's about a stone being whirled around.?

Question

I really don't know how to do this problem, can someone please teach me? Also, PLEASE explain to me how to do them. I really want to know how to do them.

http://aycu25.webshots.com/image/9504/2001750964479605721_rs.jpg

Answer 1

calculate the height above the ground of point A.
The height can be found using trig functions and the facts
The height of the center of the circle is given
The length of the radius to pointA is given and the angle.

calculate the component of the velocity that is vertical. This will be used to determine how long the stone will remain in the air.
The angel 57 degrees will again be used along with the speed of 2.2 Meters per second. call this V0

solve the equation V0*T-9.8*T*T/2+HofA=0
The "T" time that satisfies this equation is the time that the stone will be still in the air.

calculate the horizontal component of the velocity of the stone at point A. We will assume that the air Resistance is so slight that it can be ignored and that the horizontal component of the velocity will remain constant throughout the flight of the stone. call this Vh

calculate the distance traveled
D=T*Vh