A Uniform Ball with a Mass of 125 G Is

Multiple Choice

A uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.50 m/s when it rolls off the edge and it falls towards the floor, 1.10 m below. What is the rotational kinetic energy of the ball just before it hits the floor?

A) 0.506 J
B) 0.732 J
C) 1.05 J
D) 2.61 J
E) This question cannot be answered without knowing the radius of the ball.