A Solid Uniform Ball with a Mass of 125 G

Multiple Choice

A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and falls towards the floor,1.1 m below.What is the rotational kinetic energy of the ball just before it hits the floor?

A) 0.51 J
B) 0.73 J
C) 1.1 J
D) 2.6 J
E) This question cannot be answered without knowing the radius of the ball.