Circular motion of a ball and string

[physics_geek]

Homework Statement

A ball on the end of a string is whirled around in a horizontal circle of radius 0.366 m. The plane of the circle is 1.50 m above the ground. The string breaks and the ball lands 2.20 m (horizontally) away from the point on the ground directly beneath the ball's location when the string breaks. Find the radial acceleration of the ball during its circular motion.

Homework Equations

a = v^2/r
T = 2pi(r)/v

The Attempt at a Solution

I know the radial acceleration is towards the center of the circle
what i do not understand is that they do not give me time or velocity.
so how i figure it out!?

am i supposed to be assuming something?

 

[Epsillon]

Homework Statement

A ball on the end of a string is whirled around in a horizontal circle of radius 0.366 m. The plane of the circle is 1.50 m above the ground. The string breaks and the ball lands 2.20 m (horizontally) away from the point on the ground directly beneath the ball's location when the string breaks. Find the radial acceleration of the ball during its circular motion.

Homework Equations

a = v^2/r
T = 2pi(r)/v

The Attempt at a Solution

I know the radial acceleration is towards the center of the circle
what i do not understand is that they do not give me time or velocity.
so how i figure it out!?

am i supposed to be assuming something?

You gota calculate velocity using kinematics.

 

[physics_geek]

o kinematics

but that would require something like d = .5at^2 rite?

 

[Epsillon]

Basicly just treat it as a projectile motion question to get intial velocity then that initial V is your velocity for the circular motion.

 

[physics_geek]

well if I am to treat it as a projectile motion question

that does not really help me figure out initial velocity...im sorry
im just really confused